Thanks for the reply, I'll make sure I do all of that.
Now I just need to find a working AOSP style ROM. AOKP sounds a bit sketchy with regards to WiFi, which is a shame because it looks pretty good. Might give SuperNexus a go.
SU, you said you'd go for AOKP in my situation?
Edit: I'd need i9300 from this list
, correct? I'm using an unlocked GT-I9300 (UK).