New to me 2009 cMP what to do?

Hi guys, after my re equaintance with the cMP 1.1, I kinda bit the bullet and thought I'd grab a 4.1, which are cheap enough now.

Bought one for 600us.

Basic spec, single CPU tray, 16gb of ecc ram 2.93 quad core.

I would like to do the firmware upgrade to 5.1 and have bought a X5690 that I'll need to de_lid.

I've got 2 gtx 570's Mac cards that I'd like to run in this box. Will the PSU be powerfull enough? If need be I can get rid of the DVD drive if more power is needed..

Also...

New to me 2009 cMP what to do?