Hey Mike,
It's good you are getting the motor and tranny in as the final ride height of the car is critical when getting front wheel measurements.
I think a 10.5" wheel is the widest we can run with the Hotchkis setup. Any wider and you run into the bump steer spacers. You could take them out but would have to deal with more bump steer.

For the rears it looks like the 315's will touch the leaf spring on the passenger rear but I can probably use a 3mm spacer and be fine.

I can still bring my wheels with 295's and help you measure
just let me know!