8 3/4 avle/springs/shocks question ??
Not following you, /6 leafs or ss leaf springs? You should be able to have a pair of ss springs made with less arch. Look for a local spring shop that makes truck springs, big trucks break springs all the time, highly serviceable part.
I like the nitto’s over the mickey’s.
The 3:91 may be a little steep for cruising.