Hey Rally, as for the cams, you have to look at the specs of the cam to determine how it will effect the engine. You always want to look at the duration @.050 not advertised, and the lift. Most companies will post at what operating range the cam works best, so that you can make a better desicion. If you checkout this link:
http://www.seanhylandmotorsport.com/html/cat05.html (Gotta thank SD Wheeler for this link to SHM) you can see that they have 2 stages for the naturally aspirated engine. Stage 1 will still give you a decent idle and give you more HP and TQ from the mid-range on up. Now stage 2 will give you an eractic idle and you will lose low end TQ, but your gains on the mid to top end will simply amaze you. As the duration # gets higher, this typically pushed your HP operating band higher in the RPMS. As your lift gets higher, it typically builds your engine more TQ in the upper RPM range also. Now I don't know what the stock specs are, if anyone knows that would be a great help. It would give you a baseline to judge off of to see how high you want to go. Plus I don't know if these cams are 50 state street legal yet either. I hope this helps rally.