If you have that kind of requirements, budget and setup, why wouldn't you just invest in a camera with a native MP that is closer to what you need?

Right tool for the job and all that..

And I'll tell you, I did test this. I set up ideal conditions in my home studio with a tripod, good lights and - short of ground tremors - zero movement, and the results still weren't that usable.

Comparing the 100MP image to a 25MP version, you really couldn't see that much more detail, and when you zoomed in on the 100MP image, imperfections were quickly visible.