I honestly feel I Must post. For others that might read this and seem to feel that maybe your right, but your not...
You want real world experience?
I have been building Jeep axles and Gearing for years. I specialize in JEEPS...
I can recall 7 (and If I went thru invoices I am sure this is about 1/4 of the actual total over the years) D35 axles from TJ's and XJ's (Same gears, axles, tubes, etc) that have been brought to me to remove pieces of ring & pinion gears from inside the diff, and rebuild. 2 of which were brought back a second time (same syndrome that you have currently I think), to be rebuilt again due to breakage.
A dana 35 has a Very small R&P set. Then add in to the mix a lower ratio, which reduces that even further and multiples the tq even further and you get significantly increased chances of R&P failure.
Then add in the small 27spline axles (YOUR "super 35" axles are not Super 35 axles, they are alloy stock sized) and your axle diameter is so small that it makes the D35 a very weak assembly there also. Yes your aftermarket axles you bought might help a bit, but in my PROFESSIONAL JEEP experience, is a waste of money if not a increased spline size/OD.
Then do the worst thing you can to the D35 and add in a auto locker like the lockrite, spartan, or aussie (even a Detroit) and you really increase the chance of axle breakage.
If you have never driven a auto locked rear axle vehicle then you won't get this, and you should listen to reason here and professional advice, if you have driven a locked rear rig, then you will understand this...
Take a glass coffee table (dana 35) and put say a 75lbs weight on the center of the unsupported glass top (power being applied to the D35 axles), your prolly ok right? Prolly at this point... BUT then take a key in your hand and strike the glass near that 75lbs weight (the locker mid ratchet engaging) and the table top shatters (the D35 axle breaks). Shock loading...
Mix that with a 4.6 stroker (if you really have one) and your pushing that D35 beyond its limits without even a bigger tire or lower ratio gear set.
Do what you feel is best for you. If thats spending money now and paying for experience, then so be it. If its listening to 95% of Everyone here, and spending your money on a assembly that will not fail at some point and not wasting your money for experience, just reliability, then so be it...
Good luck.