An update now that I'm slightly better-rested: I met the FC owner where he worked, which was a storage/impound yard. Test drove the FC first and it was very solid, interior is fantastically clean and in good shape, the only issue is that the previous owner had deleted the air pump when installing the Racing Beat exhaust - without the air pump the engine's 5th and 6th ports do not open via the actuators, so I'll have to source and install that. During the test drive of my wagon, seller/trader wasn't impressed with the throttle response, and for a few moments I thought how awful this might be to drive 1200 mi one way and not agree to trade, but once the paperwork was signed he stopped playing it so cool and seemed really excited about the car, I think he's already ordered some parts for it since I got home. He was probably 10 years younger than me, and enthusiastic about having a car with a larger aftermarket than the FC, I'd say despite the FC being so clean, it just wasn't the car for him.
After the trade was done I drove across town to stay with a friend, and thought I would get on the road early Saturday morning, but he asked if I'd be willing to help move some of his car collection from one storage warehouse to another before I left. You don't have to twist my arm much when it comes to driving cool cars, so Saturday morning was a joy, waking up a handful of classic cars from long-term storage and driving them a few miles across the neighborhood. Highlights include a very mint Lotus Carlton, a Lincoln Mark IV, and a 20th Anniversary Riviera. After the great reshuffling, I got back on the road with the FC around 3pm to head home. This time I got past Memphis before trying to sleep in the car again (which was much easier in the wagon) then drove another hour or so before passing out at a rest stop till daylight. I made it home around 5pm yesterday, and the FC performed flawlessly other than a slight dash or door panel rattle I couldn't find. It also got 24 mpg average, the a/c and cruise control works, and the seats are comfy for long hauls.
This is very surreal for me, partially because I'm probably still sleep deprived, but also because I've wanted an FC since I was 14. When I was younger, that was "THE" RX-7 so to speak, at least to me. The FD was always way out of reach for my budget, and though it's a gorgeous car, I really prefer the sharper angles of the 80s cars. In high school, I don't think I was even aware that the FB existed, so when I came across mine it sort of became a car that grew on me substantially over time, and it turns out it's still the most fun-to-drive car I've ever had. It's interesting how a lot of the car's feel or DNA is shared with my FB that I've had for 16 years now, though the FC is more of a GT car and has a much better steering feel, there's definitely a shared familiarity with the FB when driving. It kind of feels like the FB grew up a little and got more mature for everyday use type driving, but it's still a lot of fun when the road gets twisty.
Prior to the trade, I told myself that if I really liked the car I'd limit modifications to wheels and suspension at most, but now I really think I just want to leave it alone and enjoy it. So far it's reasonably fun to drive (though probably slower than my FB since the extra ports aren't functioning and the car is heavier) without any uncomfortable drawbacks. I'm having the opposite of buyer's remorse, really glad I finally made this happen, and it's cool that the wagon went to someone who's already pretty excited about it.