We fly a single-seat A-C with centerline thrust, and I'm not really sure you'll get your money's worth for a $1700 tall tail! Our machine is extremely stable, hasn't done anything squirrelly with me yet, and I've worked my way up to some pretty gusty conditions with it. We are currently flying Dragon Wings on it, and wouldn't consider switching to any other blades.
My suggestion would be to build the A-C without the tall tail option, and if you're not happy with its flight characteristics, after some practice with it,
then convert to the tall tail. I believe that once you fly it with the smaller tail, you won't feel the need to buy the tall tail.
The other nice thing with the A-C is that it does bolt together, with some help to some of the holes they have drilled out.
I'm not that impressed with Air Command's service, or knowledge of flying gyros. Ernie is a heck of a nice guy, and really knows his machines and blades. If service and knowledge is more important than bolting a machine together, try the Dominator.
Just my two and a half cent's worth.