Aokiji is basically an even more unforgiving version of Doflamingo as far as G3 teams go.
I don't have story enel or Rakuyo, so here are the teams I've determined as viable for me. (All assumed to have LV2 Anti-bind and Lv 1 anti-silence, which they should, since all teams listed are at least at level 1 anti-bind and at least 5 points in anti-silence prior without a friend captain):
1. Double G3, Garp, Doffy, Impact Usopp, and Marco.
2. Double G3, Garp, Doffy, Impact Usopp, Urouge - Urouge has less HP and RCV than Marco, but higher damage. Maybe he helps take out a mob that would otherwise barely survive along the way during a screwup.
3. Double G3, Garp, Doffy, Impact Usopp, Bonney - Bonney has more HP than Marco, and her maxxed special might save me from death against the mobs.
4. Double G3, Garp, Doffy, GPU, Marco - GPU would ensure a safer Stage 3, and a definite Marco / Garp (Garp CD is 19, Marco is 22). Need to bring Aokiji down to 1.5-1.8 million HP to burst, assuming Garp special is used for matching orbs.
5. Double G3, Garp, Doffy, Ivan, Impact - Mathematically it should be possible. Gives some extra sockets (matching orbs, maybe CD depending on friend G3), and gives some better typing for the mobs, and only need to take out the seahorse and PSY unit for the locking units on stage 4. Ivankov is also an orb neutralizer (while bringing aokiji's HP down) and a meat generator, in case of bad RNG.
6. Double G3, Mihawk, Impact Usopp, Garp, Doflamingo - 1.2 million HP taken off by Mihawk special, 2.6 million burst damage with matching orbs on Usopp and Garp.
7. Double G3, Mihawk, GPU, Garp, Doflamingo - After Mihawk special, need to get Aokiji down from 2.8 million HP to ~1.2 million HP, which should be possible in 3-4 turns. Then use Garp to orb change and Doffy to orb boost + put on Garp and Usopp, and hit all perfects for 1.35ish million. Not sure if this is possible without RNG to give 2 or 3 matching orbs to burst from ~51%.
Edit: Might look into some nami teams. Does her special neutralize pheasant beak, or just the regular attack?