i would look into jet hot too. the pacesetter coating is crap. look at my mids in the forsale section. about 5k on them and not even 6 months and that **** happened!
you should really plan out your emissions now though, whether or not you want to be legal. seeing as you can buy them with or with out emissions fittings and plugging them down the road just looks silly. plus the **** is usually such a pain coming apart it ends up breaking so thats why most people !emissions
as for cats its almost not worth it since they aren't in factory location they technically don't pass.
if you want to stay legal and make better power than stock, you should do a set of mids like i have for sale. all the factory emissions fittings along with cat(s) in the stock location. State Legal Performance
no matter what you do, just tune it for what was done! replace the o2's while you are at it and don't forget extensions for the longtubes!