options for REAR : wider fenders , overfenders , widebody ?

hi guys, i'm looking to run some 275/30/15 tires in the front and can't decide about what to do for the rear.
At the very least, I'll be running some 225/50/15 in the rear or possibly 245/50/15.
The offset on the wheels will be -1 for the 10" wheels and +24 for 8" wheels.
My preference is to run the same size tires all around so I'll be able to rotate tires front and rear, but I know this may not be optimal for handling.

I built this car for autox mostly (DM) - daily it occasionally, and when I get a chance it sees the occasional lapping day.

I think I have found a solution for the front, but do any of you know of a solution for the rear?

I'm not opposed to running overfenders, because I don't think the standard roll or even cut and flare will be enough. If you have seen overfenders, widebody, etc, please link me.