Just remember that cutting you a check doesn’t mean they are giving you any money.
If your cap cost is X now, it should be X - $1,050 without the check. i.e. your total lease cost is the same whether you take the check or have a lower monthly payment (trivial differences due to interest).
Keeping that in mind (and the fact that December programs ended on either 12/31 or 1/3), you are not in any special situation now where there is any sense of urgency. As @HN308 suggested you can wait til the end of January.
IMO I would just wait 'til your Camry lease is over in 5 months. There’s no free lunch here, you are still paying for the remainder of the Camry lease, just that those payments are spread out over 39 months.