I tried

Maria - Main - 0
Eze - Adam - Alci
0 - 0 - 0

Subs Queen P. = Khan

I am doing worse (best is 93.47%). I tried other combinations with equipment (best is on Adam now) and formations and that is the best with those heroes.

I should be able to get to level 117 before Thursday and I am going to upgrade the equipment and talents then and see what happens with the original formation.