skip the SLP stuff. not that it is bad, just that it isn't optimal for making power.
where are you located?
TTP in north jersey, one of our Club Sponsors, has a variety of head and cam packages available. check out their site,
http://www.ttperformance.net/
they can take care of everything from helping you select the combo that best serves your needs, to doing the installation, to getting the tune dialed in including all the part throttle for regular cruising. they can also get you any supporting parts you are going to need to properly feed your new combination.
if you look in the Sponsor / GP forum you will see that they ahve some special hours around the holidays.