Keep in mind that the bag is designed so that you can put a heavy meat load between the frame and the bag, but not allow the meat load to go all the way down to the bottom of the frame. The lower attachment points keep the bag tight to the frame, which allows for the meat load to stay higher on your back helping with the balance.
I generally prefer 3 piece belts with a lumbar pad, but I have to admit I'm intrigued with this one.
I have the Paradox and Stone Glacier, both with the one-piece belts. For me, they are head and shoulders more comfortable than a lumbar pad.
Good luck. Would be curious to hear your thoughts on the pack if u get a deer.I bought the Unaweep. Bag is not detachable,however , it feels good loaded up to 80lbs. I hope to be packing a deer out with it this week. The 4800 seems plenty big and I added one the base talons with bladder pouch.