Don't do the body lift... Too much is involved for that. Ths suspension is better. PLUS you get wheel travel (mostly)

Here's a price for doing it like most people here have-

$85 for Rancho Add-A-Leaf's
$65/shock (need longer shocks due to lifint the back)
Torsion Bar Tweak- Free
Alignment of front end- $65

Try www.extreme4x4parts.com Todd can help you round everything up.

All in all, you'll gain about 2-3 inches once everything has settled.

The $750 is for the more elaborate setups which it doesn't sound like you need.