My first magnum build, advice appreciated

Bought a 99 Ram 2500 with 5.9 and auto Trans.4x4. Has 120k miles and seems to run fine, just lacking alot of power compared to mystock 5.7 hemi. Planning on a Diablosport programmer, shorty headers, throttle body spacer, cold air intake and good coil and new plug wires for starters, along with free flowing dual exhaust. Sound ok so far? Also thinking of adding a 480"lift had, roller cam and possibly roller tip rockers. Comp says I have to run MP springs with their cams forabout $15 each. Any other spring options out there. Truck will basically be a hunting, fishing, off road work vehicle with occaisional hauling duty. Any other simple mods to getsome reliable snort from this stock motor. Engine is sound. Doesn't burn oil, has good compression, just needs a shot in the arm. Thanks