Keep in mind that coil cars are fixed at 6", which is higher than the standard setting of air (that you will do most of your driving in). Air at standard is slightly below coils and air at high is slightly above coils. Most cases were you could experiencing a curb height problem are when you are in standard. High or Very High won't usually run into the problem. As such, coils will usually just be fine. Also, if you are in the habit of backing in, the rear has more clearance than the nose on both suspensions.
Personally, after driving 8 hours yesterday with air and standard audio to get my car home, if I was buying new, I would buy coils + standard and then do an aftermarket upgrade to sound for $1k(-ish). Btw, I also spent 8 hours in 1.0 seats with the spring TSB and there were much more comfortable than I was expecting. As such, while I would probably still get next gen seats if ordering new, they aren't a deal breaker.
Chris, In the end, if you go looking for an inventory car, I would NOT let having/not having air/coil, standard/upgraded sound, 1.5/next gen 2.0 seats be a deal breaker either way.
Thanks Cyclone! Good thoughts. I had a dream the other night that my wife have me the go ahead on both. We will see in 8 days on my birthday... She may surprise me!