so after many many weeks of trying. I finally beat him. form i used:

Maria, Adam, Main
x, x, x
Herja, QPenth, x
Sub Khan

Was getting around 75-85% and reaching round cap a few times. In the end i won with 79.34% HP left.

QP - HP 143k
Khan - HP 124k

total power in formation 106.6 I might not be the biggest, but eventually i get the job done. hope this helps. and ty to all who have posted here. all info was a huge help.