H Crist,
Looks good.
I have tried to think through the same sort of setup as you suggest, and I have one thought.
The latches, like the one Bob pictured, are very tidy, and if the latch is placed in the hatch, not in the fuselage, then one hand is all it takes to grab the sides of the hatch and pull the pin back and remove the hatch.
This frees up the other hand to hang onto the ship. We have achieved single-hand, no-tools battery access, and along with it access to the hidden disarming plug!
I'll say it again, nice work,
Dean