I'll admit the BIG steering wheel could be a problem. Not making fun at you here but try getting in a 37 Art Deco style cab.
I'd suggest a smaller steering wheel. I had a 50 back sometime ago and it was ok for me, wife and one kid. But I was "small" then.
Some guys are using seats from cars like the Buick LeSabre's 60/40 for comfort but not sure about leg room.
No one has previously changed the seat have they?
Lets see what others say...and by the way. Congrats and good luck on the start up. There is an end to the journey...isn't there?