Need to do some research first. Pinion angles are critical and you should go to Tom Woods page halfway down grey banner Technical Information and Sponsorship's. There is enough there to keep you busy and get you smart. The T-Case drop is negative and defeats some of the purpose of all your lift and may do nothing for your pinion angle.
Read some of the SOA thread builds here. Some are amazing and have pics to help guide you through the process.
It will be a great mod and give you some great clearance and a great looking YJ when done.
So a little research get your plan together and when it is all mocked up and ready for a driveshaft you can get an angle finder out and tack in the spring perches. Should be 2 degrees lower than the angle of the driveshaft. You are also going to need a traction bar for preventing severe axle wrap.
There are some great kits around for the conversion so look around and read what others have used.
Then there is the steering setup which will be interesting.
Don't let anyone discourage you because a properly done SOA will make for a badass YJ!!!!
89 2.5 TBI, 4" RC lift, 1" Booms, SYE, Adams Driveshafts front and rear, Ford 8.8 with 4:88s, BFG 33X12.50X15, and a ton of other stuff.
AF Jeep Club Tail Number 184