Ok this is a real simple problem.
1) Do you like the car?
If yes go to next question.
2) Do you or some very reliable friends now how to do this?
If yes go to next question
3) Do you want to continue driving it in the shape it is or when its all fixed up?
If yes go to next question
4) The final question. Would you rather wait until it isn’t worth trying to fix?
If you answered the questions above yes do it. If you answered most yes Do it
These are the basic questions I have always used when I start a project. It’s never been if I will make money or if anyone else will like it. I have a feeling about everyone that loves their Mazda will tell yah to fix it and the others? Well like we ever care what a guy/gal that would drive a HONDA ever though @-
I say Fix it up and yah make sure you have a way to work/school when your working on it even if its a POS you paid $50 for

I have been there and done that.