Whats your budget? Other than the cam and full bolt on's, your on the right track. If your going to try to squeeze every last bit of power out of those parts, then you may want to look into different CAI and headers. People will argue that it doesn't really matter what you buy, but if your trying to get all you can get out of the car then it
does matter. ARH or Kooks headers are at the top of the list. CAI inc or ADM along with an OTR system will help get you there. Also consider some extras like a UDP. Full bolt on's is where I was with out cam I was 421 on a mustang dyno. No cam. don't forget the tune.
You may want to upgrade your half shafts, people have been known to break them on a stock power plant.
Or you could just bolt on a couple turbos and be done with it.