this is all so familiar. Just been through the same process. I'm on a budget and blew most of it on my bp&w and regs, but managed to pick up an ex rental 7mm wetsuit from a dive shop for $100 and it's in good nick. Got an oceanic veo 100 nx computer off ebay for $140 delivered, no clue of its any good but it seems easy enough to use, is nitrox ready and covers the basics. kinda got gear research fatigue and grabbed the first good value computer I came across!