1. Weld the rear since it is not a DD. That is pretty much free. Upgrade to E-locker or whatever in the future.
2. Dual cases or just the 4.7s if you need to save a few buck in the meantime. With 33s diff gears aren't much of an issue yet if you have duals.
3. Save the rest of your cash until you run it a bit and find out where your weak points are.
I would hold off on the Longs for the time being and do those when you have to tear the front axle apart for gears/locker in the future anyway. That isn't a job you want to do repeatedly if you can avoid it. That would be the time to take a good look at the bearings and stuff and consider a knuckle kit if you need it.
I would suggest running the 33s for a while before going larger. They will limit you on some stuff but it will also force you to learn how to drive and really get to know your truck. I have seen a few guys who start out huge from the get go and you can really tell by the way they drive.
