I think it will work out.
I would try to work with them on the blatant issues like the tiny homes that have power but weren’t green tagged. Show compliance and a willingness to cooperate.
Contact an attorney to see if the previous owner may be liable for the issues with the tiny homes if it looks like they supplied power under false pretenses. When a new account is set up, it has to be inspected, especially in a town with rigid inspectors.
Write up a game plan for the other issues you were planning on doing over a few years so they can see your intentions. Give them a visual time line and make that your priority.
This is just one game plan
Keep us posted.