Wally,
Depending on what type of column you have and the other things that you need in the car at that point, like the center console, pedal box, and seat placement, the proper placement will be up to you. Find a position that is comfortable and that will be O. K. I looked at the placement of the wheel and the driver position by ooking at the Nascar guys in the interviews they would do just before a race started.
How I mounted mine, was to weld the fitting onto the colum at a distance that I considered too far away from the dash. Mounted all the other pieces and then sat in the car and mounted the steering wheel. It was as I figured too close to me. I took the steering wheel off the quick connect, and slid it up and down the column until I had a location that was comfortable for me. Marked it on the column and then cut it at the other end(where the u joint is). You have to decide if you like driving with your elbow on the console, or not. Things like that. The column will be your guide for where the placement/orientation should wind up. Set the vertical height at this time as well. Be sure you can turn the wheel without encountering any obstacles(like your belly etc.). Have the front wheels off the ground for that test. Some people like to drive with their arms extended(Italian cars). Some like them supported. Just decide for yourself and anyone else that might be driving the car. As if that's going to happen!!
Bill