Sorry, I haven't done the coil over shocks, the man to listen to is Greg with his two off road Explorers. He has pushed his 95 a long way, it has a 302 conversion and he has done a bunch with the front IRS, the coil over shocks he did long ago. He has worked with those parts enough that he can guess fairly well what spring rate is needed for height. I expect to rely on his many posts, and a few questions I'm sure I'll have.
I have a stiff front suspension in my 98 Mercury, lowered about as much as anyone, 1.5" front sway bar, "B" torsion bar, lowering keys, and Bilstein shocks. I'd like to soften the spring rate some, and the coil over springs supposedly do that some. The BTF UCA's seem mandatory for some trucks, given the random camber range they have.