Which GB to get in on?

Currently, there is a GB for an all-pro leaf pack and another for 4" spindles. I was originally set on the all-pros bc my leafs squeak like shit, I cant get the TSB, I haul a trailer like once a week, and im just finding any excuse to replace them. The all-pros are 350 (i think). Now I come across the spindle GB and thats just a killer deal IMO (420).

Im running stock suspension with a 2.25 procomp spacer on 265/70/r17. Eventually ill swap that out with the 5100/eibach combo. Until then it is one part at a time for me.

Might be an easy question but, what should I jump on first? Which GB? Given I will wait a while until I buy something else suspension related.
This is the truck as it sits now.
Thanks for any input.

 

How much lift you want total?

 

I dont really want to go too far over 3". 4" isnt too bad, just dont want to be nearing 6".

 

From that pic i'd say get the leaf pack first since you'll notice results. Looks like your ass is sagging pretty bad.

Id jump on this but I ordered my expo leaf packs from allpro last week and got delivery yesterday.

My only concern now is the driveline vibe which I already went through and resolved 4 years ago when I did my TSB and AAL.
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PLUS, install on a spindle is WAY more intense than a basic leaf pack swap out. My. 02 cents.