Shouldn't be an issue. When I picked my 410 up it had 30" tires with stock rims and a standard SPOA and didn't even come close to rubbing.
I switched over to the wider SJ-413 axles and use 3.5" of back spacing as was able to run 33x12.5" tires with very little rubbing. Nothing a hammer didn't fix.

I would stick with the 3.5" of back spacing on 15x8" tires. That seems to be a pretty standard and won't cause to many problems when you eventually switch your axles out.
The Hawk pads seem kind of small, but they are the same as the stock. I kind of like the Sky Manufacturing pads as they have the plates that wrap around your axle and attach to the stock mounts for a bit of extra strength.