To get some accurate replys you need to provide a little more info. What kind of wheeling (if any) will you be doing with the truck? Do you ever plan to SAS it? What kind of budget are we talking about? What kind of fab skills you got? In order to be helpful we'll need answers to most of these questions. And a belated 
to marlin 
if you plan on doing an SAS, i'd forget the IFS lift, and go for the SAS now. No point in spending the $$ twice. To get a good lift kit for IFS, you're prolly looking at $6-800. Then, if you wheel hard, you'll tear up the IFS in a few years, and need to do the SAS anyway. My truck already tracks sideways down the road, and the IFS is starting to get beat.
If you're not going to wheel much, there are some OK lifts out there for the IFS, but you kinda get what you pay for.
Stay away from blocks in the rear, even if it means buying some junkyard springs and moving perches to make them fit.
