How do I pay off BMW credit to sell to third party?

[JAH1]

Dealer has a very nice CPO 2008 4.8 that I would like to buy but only offered me $12k as trade in for my 2006 4.4. I have a third party that wants to give me substantially more. I ask dealer for advice (and offered salesperson $$$ on the side to assist) and they claim there is no other way to do this than:

"send payoff amount to BMW credit, wait about thirty days and they will send you title".

Is that right? I am not dying to do this as lots can happen in 30 days to muck up the deal(s). Also, I don't want to ask my buyer to front the $$$ and then say "sorry, can't let you drive the new car you just paid for as the title wont be here for 30 days".

As an added PITA in the mix, the 4.8 salesperson is now giving the "please let us know asap as other parties are really showing interest" line. I would like to tell the salesperson to jump in lake but the 4.8 is mean and I like it!

Does anyone have any insight or advice?

Thanks

Joe 20016 4.4