I'd spend $900 on a used car dolley and not have a cut up or otherwise altered front end. Just my humble opinon. I'll keep the ability to use just about any bumper I want and not worry about compatability of the tow bar.
Oh, and $50 on custom tire straps to strap 44" and smaller tires in case I tow a buddy long distance. Get a trans cooler if you do lots of towing, too.