Hopefully someone else will correct me if I'm wrong.

I think the rear axle will be okay.
The problem may be the front axle with clearance between the tie rod ends and maybe also the drag link.
Jack the truck up and take the wheels off. Fix a straightedge to the back plate. Rotate the steering wheel and do some measuring.
Get an idea on how much clearance you have then reduce that distance to allow for tire bulging and front axle movement.

The "roller skate" look is actually quite pleasant.
If you ever have to arm-strong wide tires with a manual gearbox, for a long time, you will understand.
Not so bad when you are "spring chicken" but old timers like me have a thing called "Arthur".

"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."