Howdy and welcome to Airforums.com, Shelley!

Wow, you have picked yourself SOME project. Unless you can find yourself a big, fast,
really experienced crew of repair folks, I would think twice before making any promises to folks about having it all done for this June.
That device on the ceiling that one of your helpers was tuggin on is (I think) the exterior TV antenna control. It lets you raise, turn, and lower the TV antenna on your roof. So tell them to stop yanking on stuff and stepping on your doors until they know what they are doing!
Seriously, if you intend to do it yourself, you will need a copy of the Service Manual for that year. There is a lot of great info in there, worth it's weight in gold!
First chore: get it protected! Read threads on the forums about stopping leaks, and get to that first. Water seeping in is the biggest enemy you have. Stopping it from coming in will give you some time to think it all through and plan on what to do and how to do it.
It coudl be a great experience for you and your "crew" to work on it together, so take your time and attack it wisely.
Very sorry to hear about the problems you and your sons have had, keep up the good work!