different forks geometry

I´m working on a MTB design

the bike is intended to Trail and XC main use

It fits a suspension that can move from 80-100-120 and 140 and of course the AC lenght is modified with every travel

I would like to design the bike with a certain travel and lock the geometry to see how the AC lenght changes the HT/ST angle as well the BB height

can this be done??

thank you