I admire your courageousness, but have nothing more to say on the topic than, "sell it as quickly as possible unless you want to spend lots of money on it."
My hard lesson, one that I'm still learning, is that it's smarter to buy a true enthusiast's car at a higher price than a piece of junk (piece of art?) in hopes of fixing it up.
Otherwise, most of the questions raised have been answered in the past and can be found with a quick search.
best, whit