Justmeok..I've done many frame jobs (2-10 a month) years ago and there is a lot more to it than cutting the frame and welding it back together. It must be properly reinforced, cut at the right place, welded in the correct manner, and the driveline angle must be correct, not to mention the brake line, wiring, etc.
If you decide to do it contact me and I'll help you along. But don't do it if you feel your not up to it. Your talking about the backbone of your truck.