Steve, that is a well thought out and practical setup.
Retaining the Park/Home position sure speeds up the next nights's setting up procedure.
I put a mark on the upper and lower halves of the MkII mount when it was in the Park position. Now I just return it to the pier in the same position and make sure the OTA is exactly vertical. It is then ready to go. No alignment necessary.
The Battery/Counterweight is great. More details on the Battery type (model, weight etc.) and housing would be welcome. I guess it is balanced around the shaft axis as well as balancing the OTA?
Michael