So you start up, leaving the aircraft unmanned with rotors running immediately after start, remove the GPU and stow it yourself?
....um, yes, if I have to... we also sometimes have to do hot refueling where there is NO option of shutting down, because of the remoteness and the fact that if the battery couldn't restart the a/c, it would mean days before someone got to you.
You also doing that with pax on board?
if you've got pax, you've got people to help
At a minimum I'd suggest a GPU plug to jumper adapter
this is the other option, and has worked for me very well, when you have behicles around to jump off.