If you do the 2" Budget Boost and the 3" springs, you'll be at 5" of lift, which would require a few more upgraded in order to work properly together.
You would need ADJ. Control arms, SYE, Rear CV DS, Shocks and Extend Brakelines.
If anything, maybe you should just replace the springs, with either 2" or 3" springs for Terflex, OME, Full Traction or Rancho. No need for the Budget Boost then.