his springs will work with it but they are also on the verge of not being able to control the valves..
Pac is the go to springs atm, stay away from comp 918's WAY to many ppl have had springs break to even consider them.
Bud cam selection is like a muffler, its personal preference and based on what converter you choose.
With the Circle D 285 2800 its a perfect match, you could get alil more topend power by going to the 212-218 highlift or go with the 218-220 for more power everywhere, but sacraficeing a tiny bit of lowend..
by lowend I mean below 2300ish rpm.. BUT the convertor will make up for it, by allowing you to get into the power of the cam faster..
I advise, calling one of the above mentioned shops and talking to them in length.
Tellem what you want to do, what you expect and what price range you have to work with. Tellem your a noob (no insult intended) and you need advise on the complete build.
These are gearheads, bud, they LOVE to talk cars.. so be ready to take notes and listen, listen and listen more.
your going to learn alot in a very short time.
Take the opp to read over at LS1 truck and performancetrucks. they get this exact question " i need more" 20 times a day...