If you are planning to repaint as well as match the cladding and all I wouldn't lift it. Build the truck in one direction. Either you lift it and get mudders for a rough look (keep the cladding the same), or you keep it the factory height, get bigger rims and paint it all one matching color. (pimp it out) I wouldn't try to do both. I've seen way to many vehicles with an identity crisis.
And depending on the color of your interior, a deep gloss black (with cladding included) Avalanche with 26" chrome, or black spoke/chrome lip, and HID headlights would look very hot.