Would those be reasonable/workable upgrades? I'm not looking to do too much hardcore gaming (most likely Last Remnant, Left 4 Dead, S.T.A.L.K.E.R.) and I won't be OCing either. I have Vista 64 I can install (currently using XP32 =\ ).
Unless you plan on having alot of videos, games, music, etc. installed on your machine. You probably could get a smaller HD and spend some more cash on a better GPU or PSU.
One thing you want to make sure is never to cut corners and try to save money on a PSU. Always spend that extra buck to make sure you have a more realiable system. a cheap / bad PSU can cause so many problems in a system.
I've never done any overclocking before. I tried to read the forum post on here about CPU ocing, but I dunno... I feel like i'm one of those guys that can screw up something in BIOS easily on accident...
I don't know if its bad - but I also don't know if its good. Antec's reputation for PSUs has been spotty. Some have been very good - others have been stinkers.
Without any technical reviews you don't know which category that PSU falls into. And I can't find any technical reviews on that Antec Basiq 550 Plus.
There are two solid reviews that back that up - having been independently tested by a "trusted reviewer" like HardOCP and JonnyGuru websites. You're not stuck with deciding on if your believe the MFGR's marketing spiel.
I can't fault the Antec Basiq 550 Plus on what I know, it could very well work out OK for you in the long run.