Depends on your pockets and how deep they are, how much you want to end up with. There is a wallet emptying disease called 'inchitis', it starts with buying a 2" lift for $800 from say OME, then deciding you want 3" so you go buy a $100 budget boost, $400 for front and rear adjustable trackbars, then you decide you want 5" so you go spend $1000 on a RE kit, then find out you need an $800 SYE /Driveshaft, remove all the old stuff and sell it in the forsale section
, that does not count the cost of the labor if you had it done at a shop.
If you want 5" go for it to start, Decide what you want and where you want to be.
A good basic kit is the budget boost for 2", you can put that on in your driveway in about 4 hours provided you soaked all your nuts and bolts in power blaster for 8 or so days
A nicer one is the OME kit with shocks, rides very nice and is very stable, $800.
Anything else I would go with a complete kit from RE with springs, shocks, adjustable control arms, adjustable trackbars and SYE, figure $1500 if you shop wisely and might even find a online store that would give you a package deal of some sort.