Hello,
I am interested on this project.
Still i am new to mining and have some questions:

-What GPU is best suited to the monero like coins?
-Does the XMR-stack app support multi GPU rig? If yes, it uses them automatically/ If not, what mining hardware do you recommend?
- Which pool do you recommend for multi-GPU rig (i think crypto-knight is fine), i am based in france.

Thanks in advance!