Dave, this project should be perfect for you and your son.
There is a lot to do in all areas, Mechanical, Electrical, Trim, Paint and tuning.
Any work you can do will accomplish two important lessons, cost savings because you won't hire the job out and experience that your boy will never get anywhere else. Above all, the time you spend together is priceless. As work progresses, your boy will see 'you' in that car's work.
Hang a few pictures of the finished car around your garage. Then any work you do will be that much closer to the light at the end of this tunnel. I sincerely hope you two stick to it and see your car finished, even if it takes years. Good luck. - Dave