Google is the answer. There are quite a few charts on the web showing control arm lengths at various lift heights.

 

The stock shafts are only designed for about 1" of travel (compression and extension at stock ride height). You already stretched it a little when you lifted the jeep (the driveshaft angle is the hypotenuse). When you move the front out you will stretch the hypotenuse more. Maybe you will get lucky and the stock shaft won't vibe. I have three here that all vibed, had to go to a WJ shaft to make it stop.

 

I felt that adj. HD U/LCA's were a must on my 4 1/2" short are setup I do have a new rear custom driveshaft but the front shaft is still the stock shaft just rebuilt and rebalanced and have 0 vib's in it either.


With as many tire and wheel combos as there are out there I would think an Adj. Arm would be the only way to get an exact fit, but I could be wrong.

 

With my DBO mid-arms, front is pushed forward about 2" /centered in wheel well. Stock front shaft. No issues.
Just consider that there may be a possibility of having to run a longer drive shaft.