I haven’t established ride height yet, the crossmember was just welded in last weekend and I just got the frame home. It installed pretty easy, lot and lots of measuring and remeasuring then double checking before tacking and final welding. We installed the crossmember with a 2 degree angle front to back to help offset the rake from the rear suspension.
I figure the IFS like you said should drop it around 4”, the springs in the back should lower the rear between 3-4”. I’m putting smaller tires 26”, with the back a bit wider than the front. I am ok with the lower height as the front springs were totally flat and the rears we fairly flat from 12 years in storage with two motors in the bed.