The rear air shocks I used will fit your application. They are stock length so you can use them now and with shock extenders after the flip.
https://www.summitracing.com/parts/MON-MA743
I had originally planned to do a 1.5 coil drop and purchased a set of CPP front drop shocks that were on sale. I have them on now, but I haven't put any miles on them yet so I don't know if they're too soft, too stiff, or just right.