well, the prices seem ok, minus a few things.
You have no prices listed for the regear. If you pay a shop to do that expect around 500 per axle including parts.
With this new setup, you will be looking for new tires. Expect to pay around 800 for a decent set of 36's (prolly a good size)
Extended and new front driveshaft... expect a good 200 there as well.
Unless you run 2 kinds of rims, plan on finding a way to change the bolt pattern. Waggy is 6 on 5.5 and explorer is 5 on 4.5. Redrilled shafts and drums or custom rotors will run 100-200 from dutchman.
Figure around 100 for smaller parts. (New bearings, u-joints, u bolts and plates)
New shocks ~130
Extended SS brakelines ~100
New balljoints because the waggy ones are prolly shot (I dont know what a balljoint runs)
And lets just throw on another $300 in unexpected costs, because there is always some.
Plus whatever I missed, someone chime in with other ideas.
Total now (including other list)
$3230 And I think this is a little conservative, but you can always find deals and freebies but this should give you a more realistic view.
Beer $200