Epic Arcane Caster vs Epic Divine Caster - Help me win this?

I am playing in an absurdly overpowered game. We are using the gestalt rules (advance in two classes, taking the features and best attributes of both), started at 11th level, and through time-travel shenanigans, we are now 27th level using the epic rules from:

http://www.jessesdnd.com/sites/default/files/EpicPathfinder1.6.pdf

As a neutral evil 27th level Divination Wizard/Magician Bard with the immortality discovery, my next concern after the party deals with the threats facing the multiverse is naturally to neutralize my companions so I can rule the material plane as an immortal god-king.

My party, besides myself, contains three minimally magical melee types, who I expect I can take out of the picture using Moonstone Cats (http://www.d20pfsrd.com/mythic/mythic-magic-items/other-magic-items/), an approach that has the added bonus of keeping them around unharmed in case I need them again. If that doesn't work out, I have plenty of other options.

One of my party members (Warpriest/Slayer) is very clear in his roleplaying that he only really cares about fighting demons/devils, so as long as I don't consort with those, and I don't get TOO macabre in my rule to be ignored, I should be able to put him to good use protecting my domain from external threats. (And if I have to, he's not well optimized against me, so I'm confident I can put him down in a straight up fight.)

And that leaves the sticky wicket - our charmingly lawful good Paladin/Oracle. Utterly ferocious in melee, and my (near) equal as a spellcaster. Absurd saves, high AC, buffed to the nines, with immunities out the wazoo. He is definitely going to have a problem with my long-term plans.

So, how might I deal with this guy? Tricking him into "falling" probably isn't an option, and would only take out his Paladin side anyway. My best thought so far is a straight fight with copious Pearl-of-Power driven advance casting of Spellbane (https://www.d20pfsrd.com/magic/all-spells/s/aroden-s-spellbane/) to neutralize his best buffs and nastiest spells, but I'd prefer something a bit less... direct.

Again, I am a 27th level Diviner Wizard/Magician Bard. Let's assume for the sake of argument that any spell on either class list is potentially on the table, and that I have a million gold to spend on this problem.

Ideas?

Learn to share

Contingency enough spells that he can't reasonably save against all of them. Front load so many things to happen at once that it makes the dark gods giggle to watch a quarter mile blast radius disappear in an instant. Make a sphere of annihilation pop into existence in his square, while a bag of holding and a portable hole get jiggy with two dozen tanglefoot bags and a thirty pound bag of dust of dryness already loaded to open a portal to the smaller version of a plane of water above his head. Rig a trap so deadly that the third failed save of a hundred saves is more than enough to off him.

Mages Disjunction?

Template some stirges, set some walls of force, and laugh at the pally in a cage full of lethal touch attacks.

Don't forget to use his paladin said against him. Even if you can't make him fall, you can make him fall for anything if you dangle a helpless family in front of him.

At that level you should expect his god to interfer and protect his champion and the world from your evil rule.

And probably a lot of other gods and heroes as you have now become the main villain (and NPC)

Trick him into entering a Magic-Dead (with a gate), mildly-Evil-aligned, minor negative dominanat energy Demiplane filled with water. Make the demiplane permanent. Build an Adamantine door around the Gate with the lock on the outside and an Empowered Arcane Lock spell on the lock. Throw in some nasty aquatic beasties for good measure.

Without magic, the Paladin has only a few minutes to break through an adamantine door while underwater. As a caster-focused character, he likely doesn't have a lot of tools to do this. Unless he's using a piercing weapon, any damage he might deal to the door is halved underwater before calculating hardness. Each Standard- or Full-round action he takes reducing the number of rounds he can hold his breath by 1. If there are some hungry monsters in there as well, I really can't fathom a way for him to survive aside from what Khan said, with divine intervention. Meanwhile, he's taking 1d6 negative energy every round from the Negative Energy Dominant trait, and when he reaches 0hp for whatever reason, he crumbles to ash. I guess the aquatic threats could just be Undead creatures with Swim speeds, which would be healed by the Negative Energy.

Of course, if he even remotely trusts you it's easy to set up a portable hole directly next to him while he's asleep, cast an AoE spell to dampen sound, and roll him over into the hole and pick the hole up. It's a paladin in a pocket, and now you can drop that portable hole off somewhere inconvenient and wish-resistant like a dead magic plane or a sphere of annihilation. One thing you don't want to do is ever assume he's good and properly dead. There's always, always, always a chance to revive something you want to make less dead. Anything and anyone can be brought back with the right level of effort, even if you have to get creative and do awkward things like locating a sword stained with the blood of the victim, wishing the blood was a whole body, mind jarring the body to make it technically alive, using suggestion on it to grant consent to be raised, and then reviving whatever it was.

Basically treat him as a Lich himself and assume the universe likes him more than you. Kill him real good and then pretend he's still out there planning his revenge, forever.

Source Severance selecting Divine and Mage's Disjunction should carry this fight.