If you're ok with rolling fenders a bit and running some camber, I personally would not run more than -2 unless you're hitting track days, then 17/18 x9 +35 should look pretty good. Tires can be 225/45 or 225/40 depending on if you go 17" or 18". That should put you pretty close to flush and without really stretching the tires. A 235 width is better for a 9" wheel but balancing fender work/camber/stretch on a car that won't see track time, a 225 is a safe width for a 9" wheel but that is the narrowest tire I am comfortable recommending.
If you want "meaty" fitment then you would have to reduce the offset and width slightly to accommodate for the wider rubber. A 245/40 is a great performance tire size but stuffing that in there might mean more camber or more fender work. Also with a 2" drop running a slightly narrower 225 width tire will be easier to "fit."