I think your best bet is to call around and ask Novak and/or some Jeep specialty shops. I imagine it could be made to work with a shorter driveshaft, but the issue you may run into with a very short driveshaft, at a very steep angle, is the shaft binding under load or if you do ever go off-road. Also, you could get some driveline vibration with the steep angle of the driveshaft.
I owned a 79 CJ 5 myself. I bought a 4” spring lift and they recommended lowering the trans/transfer case 1” (by lowering the trans cross brace) to reduce the angle at which the driveshaft met the pinion to eliminate vibration. The longer trans will have the same effect, making the driveshaft to pinion angle steeper.
Short answer, I do not know, but a Jeep / off-road shop would. I do know really steep driveshaft angles are not good.