Cam Question for a 360

RubleFish, Since the block is a re-build long Block. I thought maybe I would be ok using the lifters that are currently in the engine and just change the cam. Am I taking a big risk in doing this? I can get a cam combo with lifters. Is it a good idea to use a RV cam and change the valve spring on a small CAM? Sorry for all the questions. I not sure on what cam lift I should get. I dont want something to crazy. Witch CAMS should I go with Mopar purple cam or Crane Cams?