Shackle Flip and 52/56" spring swap

[DBear]

Hey guys, I have researched and have seen opinions all over the board about what I wanted to know about shackle flips and spring swaps....would like to see what you experts think? Here is what I was considering doing to my rig.

Here is what has been done already:
71 Burb 4x4
6.2 diesel/700r4/205
10 bolt/14 bolt swap
37' military BFG's
4" lift springs in front, and blocks in back (which I do not like)

Things considering doing:

Shackle flip from DIY4x with ez inch
(should I use the original 1/2 ton 52" springs for the axle flip or I do have a few sets of Heavier 56" springs as well) Pros and cons?

Spring swap in front, go with 52"springs and ez inch ( would this be a better ride than the 4" lift springs that are 48")??

Trying to get the best ride with roughly 5" of lift. Thanks in advance