Normally I'd lean towards saving one of the cars you found, but to be honest, right now is a great time to be looking and in the market to buy. You have MANY more options now than just this time last year. The prime time to buy is about the first of the year through about the end of April. (best prices, more motivated sellers who have Holiday bills to pay or upcoming taxes and have lost interest over the winter)
With that said, I would seriously suggest doing your home work, decide what options, combination's you really want or have to have, and then find the best car you possibly can for the budget you have.
I searched for about a year to find my 67 drop top and was looking for about an 80% complete car (needing maybe a motor, interior or paint but not all of the above) Figure out how much time and money you honestly will have to put into it, hit the catalogs to get a good idea of what it will cost for major parts to replace to judge how much a cars value is to you... your always better off finding a lost interest project than something so neglected...
I can tell you that I've had my car for about 8 years and while I've done all the work on it since I've owned it, it was in great shape before I got it and I'm still way under the $10K mark including purchase price, airline ticket and truck/trailer rental to bring it home with. So if you do your home work, it can save you a LOT of time and money.
I got mine home with a bad motor, had a new motor and was driving it to it's first show with in a month... enjoying it is key!
Hang in there and make your wish list and do some serious hunting...