The 285/45/18 is a oddball size not very common. Might consider a 285/40/18 much more common size and better pricing available. only about an inch shorter
I would really like to keep the height at about 28". If offset is a problem, I could downsize the rims to 17" if that would help, but I really want the 28" tire in about a 10" to 11" tire width.