Will 17x9.5 and 17x11 wheels fit a 73 duster?

Hello fellow FABOers,
I picked up some sweet 17 inch American Racing 200S wheels for cheap withentioned tire sizes mounted to them.
With use of spacers would I be able to run a
245-45-17 on a 17x9.5 wheel with approximately 6 1/8 inch back space up front?
And a 315-35-17 on a 17x11 with approximately 6 7/8 inch backspace out back?
Don't want the front to be raised like a 4x4 bit the rear can be. Also would I have to do a full 3 inch inboard spring kit? Or would just the 1 inch offset suffice.
Don't really want a ton of tire sticking out in the rear but wouldn't mind some.
Have access to a 69 charger 8 3/4 so wouldn't have to use a ton of spacers.
Thanks for any knowledge and experience you have.