Should do, I can't remember what the gixxer6 is worth by itself but you shouldn't have a problem picking up a second hand 04 or 05 for 12k or less (just be wary of bent/cracked frames), the PC3 last time I checked a while ago was around $800, tuned I think it was $1k, and the exhaust should be anything from $500 to $2000 depending on whether you want a slip-on or a full system, and what brand you go for. It's been a while since I've even been into a bike shop though so it might be best to check with them