Welcome to the forum! Others who have your build seem to fit fine, but I'm sure that they will chime in. A convertible will give you a little more headroom. The power seats are adjustable and you should be able to adjust as needed. If you are looking at a base model, it will have cloth seats and I hear that you would have more headroom with that.

As far as comfort, it is a fairly comfortable drive. I have driven my Crossfires from Colorado to North Carolina numerous times and have no problems. On the longer trips, I get out and stretch every so often.

For the bang for the buck, you cannot beat the Crossfire. After nearly four years of ownership, I still get looks as I drive and look forward to driving it when I can. You might look at an SRT-6 model as well as these have the supercharger and will get you from 0 to OMG in hurry.