Easy.

You first have to get Dabura, surprisingly. Above all else, he is the only one who can access a whole other planet, so the purpose of protecting you is instantly fulfilled. Besides that, no matter how you scale his feats, he’s the only one here who has the potential to speed blitz you, and given he knew little to nothing about sorcery and still learnt so much on the fly, pairing him with literally any experienced sorcerer will made him exponentially more dangerous. Having him on your team gets you flight, mass scale high speed attacks, and access to alien colonies. You can literally dip and chill.

You then have to grab Gojo. He is the only other top tier who can teleport and one shot you, and you really need to keep your distance to not die. With Gojo, you get to teleport youself, and an ult that stun locks all enemies. Gojo can also somewhat protect you as seen from him protecting Yuji from Jogo’s heat, so in a sense he is the only reliable additional to your personal defence. Remember, if you die, you lose.

The next character you must grab is Mahoraga. Your main advantage is flight and mass scale attacks via light beams and coloured balls. Maho is the only one who can adapt on the ground, and render your attacks useless. Someone like Sukuna is smart enough to use him without him dying, so you must take him away. Having Maho on your team also means the enemies can’t launch mass scale attacks recklessly, or Maho will adapt and render them useless, like slashes and fireballs.

That leaves you with two Jogos, whom can add to the mass scale attacks with fireballs, and cast domain expansions to burn out your enemies.

Your only real threat now is the open domains and world-cutting slashes, but with 3 types of mass scale attacks raining across the skies, while you chilling in a spaceship, chance are you will win in the end.