John,

I’m 6’ 3” and have never had any part of the structure get in the way or restrict me in any way. Likewise the fixed seats have never been an issue for me and I find them very comfortable. I do have adjustable rudder pedals but I’ve always had them full forward for myself.
i see you’re at CLE. I’m at Geauga County airport (7G8) about 48 miles east of CLE and would be happy to let you look at my 7SS to check things out yourself.