Welcome to the forum. My coupe is a '33, and I've got a '32 roadster project that's ongoing. Both are glass, not metal. One thing I'll offer is that with each model change the interior room, both seat/shoulder width and leg room, increased. There is a significant difference between the '32 and '33, and from the time I road tested a Model A I know that they're smaller yet. I'm 6'3", slender build and the '32 is a very tight fit for me - knees up higher, less seat width compared to my coupe, and my roadster has a 2" stretch to the cockpit. I'd try it on for size before going too far with your analysis.