315/35-20 on 20x10 up front?

[Dragun12]

Ok I've been hunting the net for days and i haven't found anything, but would anyone know if I could squeeze a set of 315/35-20 on a 20x10 with a 5" off set on the front of a 72 c10 with cpp off set modular spindles?
it has a 3/5 drop and I have a nice 40 mile twisty canyon stretch of road at the end of my drive home and I will be running that same tires and wheels all the way around, because the truck see around 120-150 miles in total a day so I néed to be able to rotate them