If I was in the market for a new Accord coupe I would buy silver first in a heartbeat. It does always look clean, and when it really is clean (like after a car wash) silver just shines! Plus it's a safe color, meaning it's not trendy and it will always be classy looking.
However since since silver isn't one of your color choices, I would go with red and the black interior combo. That sounds really nice to me. Plus I think being able to get the black interior with red is a new combo choice, don't think that was available for the 7th gen. I'm personally not a fan of blue cars, never have been.
Good luck, be sure to post up plenty of pictures when you get your car. I LOVE the new coupe, it looks much better then the 7th gen in my opinion. I love my car, but I have to be honest, Honda really stepped up with the 8th gen and created a head turner. The 7th gen coupe is no head turner (at least in my experience no one does a double take with my car).