I would get the other one. If it has no problems, you can drive it asap. Then you can decide whether or not it is worth it to keep the rare one. Cause let's face it, yea....it's a rare color but we are not talking about a Vintage car here. The rare color is going to give it what.....a couple hundred extra when you go to sell it?

Get one you can enjoy right away and then figure out the other one. You will just waste 10 times the time by messing with that gremlined on thinking you are going to restore it. And let's face it, Money is fun....and time IS money. So the more time you waste, the more fun you lose and the more money you piss away.