I agree on the add a leaf out back and NOT blocks.. but id have to suggest a PROGRESSIVE aal. The ride will be smoother, ive had both and its noticable.
As for the front, ill have to throw in my pennies.... for a so so ride, or downright TERRIBLE ride if u have a trd offroad, use bilstien 5100s with stock coils.
For a happy medium (5100s are just an upside down spacer with better valving), id suggest eibach 2" lift coils and bilstein 5100s set at zero.....
Also a 1/4" top plate spacer for the driver side (it will lean without).
Ur money, but ive seen many ppl start out with spacers or just 5100s and then do the lift again with the right coils later. Ive seen it on a couple different forums, not so much here (there are not many members on this forum).
Its always cheaper to do it right the 1st time. Preloading coils just isnt the right way unless ur looking for an inch of lift imho.