Wheel tire Combo

Since you are going big bolt, I would go up to a 15" rims/tires. Much more choices in tires.
You can get big bolt 15" rallyes, with the factory offset 6" & 7" wide.
And you are right about the 245. Unless you start playing with different offset wheels, It starts getting real tight.
To better help you in regards to tire size, you need to let us know what your plans are with the car.
Do you want staggered front and back tires ?
Same size all around ?
Skinny fronts...Drag car ?
Street car, drag car, canyon car, grocery getter ?
Let us know