Gerry,
Lucky you!!

Many happy miles with your Mog. On the subject of a steering wheel, I have a 14in wheel on my 4/4. As the new +4's have bearings in the steering I am quite sure you will be OK with a 14in. I also have an Offset wheel so there is more clearance below the wheel,but there is also clear vision of the instruments. I like it as it seems to be the best of all worlds.
Cheers!