305/70r17 on stock height. Am i crazy?

So before I pull the trigger on some new wheels and tires I want to see what yalls opinion is on of it will even fit. I'm going with ridge Grapplers on some method mr 305 with +25mm offset. Already planning on shimming out my front bumper and trimming/heat gunning the liner.

 

height will not be a problem. 285/70-18s (34s) fit stock trucks with stock wheels.

Any issue will be the the 12 inch width and +25 offset, which that rim sticks out about 1.4 inches more than the stock +60 offset. You will need to lose front air flaps under bumper, may need to remove mudflaps and might need to space the front bumper. With that offset, you would likely need to do those things even if you were lifted a couple inches up front.