We decided to put the steering column on hold while we think about how we want to mount it to the dashboard, and wait for some consulting from a friend.
The best S10 frame for these trucks is a regular cab frame, because the wheelbase is almost a perfect match. The frame I purchased is an extended cab S10 frame, with a frame that is 5" longer (couldn't pass it up because of it's low mileage and for the first phase of the build, it's perfect because I don't have to rebuild the suspension).
Here's some pics:
Before (bed is just resting on the frame for now):
During:
After (still needs some welding, and we'll be boxing in the weld for strength):