If it's right, it's right!
S&S, I hope everything works out ok for you.
Here's my couple cents worth...
If the deal falls through with the 1st potential buyer, you've got leverage and tons of it. By this I mean, they will not want to keep the car for another month. You could, within reason, name your price on that car. Whatever has been offered initially, I'm thinking that it's possible to get another $2k off of that price. Of course, this will mean spending the better part of an afternoon at the dealership and running the initial sales dude, his sales mgr and the general manager through the ringer, but it'll be worth it.
You have every right to ask them to pull that car into a service bay and put it up on a lift. Any scrape and scratch... you know the drill! They know that you seriously want the car and if you go to the dealership for that afternoon, then decide to "walk".. I'm pretty confident that they'll attempt to pull you back in. I absolutely hate going through the process of buying new/used cars because of the ridiculous antics the dealer will try to pull, but if four hours is worth $2k, that's a lot of dough back in your pocket!
My experience is that if a dealer is at the end of the month and certain quotas have not been met, they are verrry willing to make sure that you take the car. The last time I attempted to buy a car I beat the living daylights out of the dealership employees (not literally) and came within a thousand dollars of my "deal" price. After going through all that, I simply told the guys, "no deal" and they tried to throw this in, throw that in, whatever. The bottom line price was the only thing I was worried about. Oil changes, free inspections.. who cares. If the dealer was/is reputable, wouldn't they just sell the car outright to begin with? So, long story longer, I bailed out. Five minutes later they're calling me on the cell phone with a price reduction yadda yadda yah... I got home while I was still on the phone with those guys, got my mail on the way in the door, found an unexpected property tax increase notice, and told the dealership guys, no way! They met my demands after all and I still walked.
So, that's my dissertation on dealing the dealership. Kick'em in the nuts for all it's worth. You're buying something that they absolutely do not want to hang on to, buy it at your price!