Wheels and Tires?

After doing some measuring last night, I have come to the following conclusion. I want to stuff as much tire as I can on the back end without mini tubbing the Demon. I have come up with the following max sizes for tires and wheels.

Wheels
American Raciing Outlaw 1 - 15x8 5 on 4.5, 3.75" backspacing

Tires
Mickey Thompson Sportsman Pro

26x10.5x15
tread width - 8.0"
section - 10.4"
diameter - 26"

or

28x10.5x15
tread width - 8.3
section - 11.2
diameter - 28"

Does this sound right to you guys with Demons, Dart Sports and Dusters?

Jack