Steering column mock-up in 31 Roadster pickup

I am on the verge of spending some large cash for an aftermarket tilt steering column and wheel for my roadster pickup. Now that I have the seats in that I will run, and the dash installed, and the engine and exhaust manifolds installed I built this mockup and placed it in the most comfortable driving position for me, as I sat in the seat. The dimensional specs. are as follow---steering wheel is 14 1/2" diameter. There is 4" clearance from inside of drivers door (no upholstery) to nearest side of steering wheel. Steering column angle is 42 degrees off horizontal. Length from drivers side of steering wheel to point where column exits through toe-board is 31". from underside of dash to center of steering column is 4 1/2" when measured at 90 degrees to column centerline. From face of original model A valance horizontaly to point where centerline of column intersects with face of steering wheel is 10 5/8". From flat floor verticaly to point where center of column exits thru toe board is 4 1/2". This puts the steering wheel in a very comfortable position for me while driving, however the wheel ends up fairly close to my lap. Since I am a guy with a big gut, I will have to have a tilt column which I can tilt up, to allow me to get in and out of the car without doing the big "squirm". According to various "experts" the column should extend 3" past the toe board on the engine side, and the inner double D shaft should extend a minimum of 2 to 3" beyond that to allow attaching a universal joint. (this is if you are running a Vega cross steering with 2 universal joints.) I can't give any information on the intermediate shaft that reaches to the Vega box, as I don't have it installed yet. I am running a small block Chev engine with mid 70's?? rams horn exhaust manifolds, a stock but boxed model A frame,and everything appears to clear very well on the engine side of the firewall.