Well, I have 225/40-18 tires on +43 offset 18x7.5" rims on my Sedan.

I am on stock height, which means my back end is really soft, so I currently have rubbing issues, which I know for sure will be fixed by getting H&R Sports.

For you, getting 215/40-18 tires will be a good idea, especially if you correct the rear camber.

if you get 215/40-18 tires your speedometer will 60mph when you're actually going 59.5mph.

However, I'm not sure if this is true, but Accord coupes have slightly a slightly more "open" fender well in the rear than sedans, so your rubing issues may not be as bad if you have any.