If your gonna run rockwells your pretty much stuck with 6.72 gear ratios. Unless you spend $2200.00 on overson 4.88gear sets.
If you stick to dana 60 front and sterling rear axles, i would recommend 5.13 gears, or a minimum of 4.88 which is what i run.
If i had a choice i would go 5.13.
Be ready to spend some. $$ on your front axle. At a minimum you need yukon or dynatrac locking hubs. My 42's ate warn hubs for lunch.
35spline axles recommended, RCV axles also recommended. I changed to rcv after busting 2 lesser cmly 35spline axles.
For lift you can do a Sky mft. Shackle reversal for the front and a shackle flip for the rear. And maybe some 4 or 6 inch lift springs. Cut the fenders.
You should have enough lift then.
Btw, do 1410 front driveshaft right away. Any thing else I used bound up and broke.
1410 ujoints have enough angle to work wit that lift.