Driving style and the type of wheeling I do is most likely a factor, but I have found that a Dana 44 (rear) with chromoly shafts is not adequate for 35s. I was constantly breaking shafts, breaking e-lockers, and replacing bearings and seals. So if others are saying that a Dana 35 with shafts is equivalent to a Dana 44 with shafts and are going to do any serious wheeling, I recommend going with the Currie Dana 60. With the currie, it is basically stock width, you don't have to stretch, and with the Currie you lose minimal clearance between diff and ground.
For the front, I am still running my Dana 44. The stock rubi locker went on me and I also had issues with breaking ujoints and ears (on chromoly shafts), but since I upgraded to an elocker and RCVs I haven't had any issues with the front on 35s. So if you upgrade your Dana 30 to 30 spline shafts like Starkey recommended you will probably be OK.
Again, my recommend is based on my driving style and the wheeling I do, my Jeep is a toy to me and is in the rocks much more than on the roads. I don't know what type of wheeling you do, so my recommend may not apply.