Flipping a new Rolex for profit?

[basicbitca]

A not-so-hypothetical: if you had max of USD 15k to spend on a single Rolex at an AD today - with the intention of immediately flipping it - which models would you be shopping for? (Guessing...a blue Sky-Dweller?) Or would the drive-it-off-the-lot depreciation make this a risky business on any model? This would be part of a much larger purchase and I'm told that wait-listing should not be an issue.

And since this is my first post in a forum for Rolex enthusiasts (lest you think the worst of me), I do also plan to snag a turquoise OP and never take it off. After configuring about a hundred different Rolexes and not really falling head over heels with any of them, those new watch faces and the OP's classic styling finally got my pulse racing. Looking forward to joining the club!