Thanks for the backup Ethan. I've learned from my bosses mistakes. Having to scrimp and make do, then buynig emergency stuff that only lasts 6 months. Then when a full implementation is required a whole new expenditure is on the cards. Painful to say the least.
For info purposes, i have moved most of our stuff from physical to virtual, with 2 x ML370 G6's, one has 4 VM's on (68Gb ram), the other just one at the mo (32gb ram), both with 2 x cpu's.
Our DMS required a separate server (vm) as it didn't like stuff like IIS, Print server or other roles on it. So virtualisation is a very handy thing to have.
That said, i also have one of the HP NL-36 Microserver's with 8gb of ram and running 3 x vm's (DC, WSUS, Print server). As they are dirt cheap, it may be a good idea to get one, get it all up and running. If it proves not powerful enough, use it as a backup. Mine cost less than £500 and thats with 4 x 250gb sata drives, 8gb of ram (the max), dvdrw, 2nd nic.