Questions on Rims and tires

[Gettin Stroked]

I posted this in the Discount Tires forum too but no hits so I'm movin it.

Discount (or whomever can answer this)-
I was poking around on discouttiredirect.com (since there is no one close) and priced a set of Goodyear Duratracks 315x70x17D and a set of the Black Rhino Rockwell -12GBL (8x170) and have a few questions.
1. The wheel itself, is it the right backspacing for a 2005 F250?
2. Whats the rim load rating (2000, 3000, or 3000+lbs)?
3. Do you guys mount and balance (please say yes)?
4. Is everything in stock? I am waiting in my tax return then I'll be hitting the buy now button...
Thats just about it, I really like the tire/rim combo and like you guys as well. You are also 200-300 less than the other tire/wheel online stores, which I find as awesome!

[Discount Tire]

^
Just replied this morning.

http://www.powerstroke.org/forum/dis...-rockwell.html

Thank you for your continued patience.