hej HDMatt,

Since this is a small case, you will have less room to expand, and mini-towers dont have a very good cooling, so If you want to build a gamepc, and expand it later, I recommend a normal midi-tower, its bigger, so more room to expand, and more airflow (better cooling) But it really depens on how much you want to expand, or how much cooling the system needs... and the 350 power suply is enough, IF you dont expand much, so if you want SLI (dual graphics-card) or more dvd/cd's or maybe an extra hard-disk, I recommend you to buy a 400 or 450 watts power suply. Also make sure you check the reviews on newegg and other sites.

Greetz,

RubenTC