After doing a little measuring comparing the TLR wheels and my Avid B5M offset rears, it looks like there's about 0.65mm difference per side. So I am thinking the aluminum +0.75mm hexes will work perfectly for me. The fronts are WAY WAY off, so I don't mind having to buy fronts for it. I am going to run the buggy tomorrow on the box stock set-up and we'll see how well it runs! If it drives anything like the build I will be very happy!
For now I added 0.6mm of shims per side behind the hexes and it seems to be nice and smooth without any binding.