Correct offset and tires for 6th gen Accord sedan

Ok, all the rubbed to death talk has made me think more of this.....

I am getting 18" wheels at some point. Don't bother going into detail on how I'm killing acceleration....

Anyhow, I was planning on 225/40/18, but now I'm wondering if that's right for my car? I'm probably going to be running anywhere from 1.5" to 1.75" drop F/R. Can I even run the 225/40's with the correct offset, say 42-45mm? Do I get 7.5" rims, or larger?

Most of what I tend to see around are 7.5" wheels with 215/40/18.......

Any help much appreciated.

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