New suspension, need your opinions

[IvanBlock]

Guys, needing some guidance on my suspension rebuild to try and get everything done at once while its torn apart. Summary so far, truck is ’87 R10, Sierra deluxe, 305/700R4 with recently installed 3.73s. Previous owner cut 2 coils off the stock springs, flip kit and generic big box store shocks. To say the least, it rides horrible. Severe bump steer, squeaks at every corner and low speeds. The UCA/LCA have recent ball joints replaced so I am going to leave them until it’s time for tubular arms. I am running 15x8 rallies with 275/60/15 fronts and 15x10 with 275/60/15 rear, yet ordering 295/50/15 during this process. I want it to roughly sit 4/5 or 4/6 and clear the 275/60 fronts.

My plan:
2.5” McGaughy or Suspension Source Spindles (I have a set of 3” spindles, yet unsure if I want to trim the LCA)
1” McGaughy springs with ½ coil cut to settle down to 1.5” (opinions wanted here)
Belltech Street Shocks front/rear
I am going to leave the rear alone for now, see how it sits with the front, can always add a shackle and notch if needed

I am wanting to change out as many bushings as possible to hopefully fix the squeaking issue.

Replacing as of right now:
Cab/body mounts
Bed mounts
Sway Bar bushings

I am sure I am missing stuff, please chime in with your $.02 of what else should be done!

First pic is with 15x10 rear. Second is with 15x8
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[74 Shortbed]

I'm going with CPP upper and lower CA's, 2 1/2" spindles and stock springs with one coil cut off, flip kit in rear with shock extenders.

 

[IvanBlock]

Now considering stock 1 ton coils with half a coil cut for 1". Rate is better than lowering springs


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[74 Shortbed]

Don't really care for a 1/2 coil since it won't sit in the perch properly, but people are doing it so I guess it works ok ???.

 

[J Knight]

I would do the 2.5 spindle, 1in drop spring uncut, and a 245/60/15 tire up front to match the overall height of the 295/50/15 out back. Also i believe the 1 ton spring with one full round cut should yeild a 1in to 1.5in drop.