Sounds like the new Sport Pilot is a bit more modular than the old one I have.
As I mentioned the biggest problem I had was getting the wheel off.
Wiring wasn't that hard. I added a separate switch panel for power at the helm since I have so many things there.
In my pilot the motor, control head, and computer are all in the single unit. Looking at the new model, I think I would put the computer inside the pedestal. There is plenty of space inside there. For me the mounting of the separate control unit would be the question. I would want it at the helm where I could reach it without leaving the helm seat. Perhaps on the side of the pedestal? Not the best in my opinion. Maybe in a separate pod up by the GPS? I certainly wouldn't want it forward on the cabin bulkhead. I find I often want to use the AP as an extra hand when I have to go take care of something on the boat. I'll be sitting at the helm driving manually and need to go forward or below to do something. I'll quickly engage the AP to hold the course while I'm away for these brief times.
As for the compass I routed the wires down through the pedestal following the motor cables, aft to the transom, down under the aft berth, then forward under the starboard side, under the head to this location. It has worked out very well. It is low, centered both side to side and fore and aft, and completely out of the way. It is right behind the yellow sticker.
