Cam, Stall, e Fan conversion

Hey guys. This is my 02 1500. Got about 242k miles on it and ive been letting it sit all winter. Trucks got no rust and a 4.8L. Now i want to put a cam and exhaust on it, and put an electric fan kit on it. I've done all the work to it but when it comes to performance and tunes im less knowledgeable. Am i better off swapping a 5.3 in it? any tips or input would be awesome.