2018 Mini Convertible - pull ahead lease. Advice?

Hello! I received a call from Braman yesterday saying that I can turn in my current lease for new car. My lease ends in August but my miles will go over by then, so this seems ideal.

This will be my third lease with braman mini (33133)
Current lease:
Gross cost - 25327
Adjusted - 24077.51
Residual - 15907
Rent charge - 2403
Monthly payment - 314.27
I paid - 1000 for fees

The Mini Cooper convertible is
MSRP: 31,500
RV: 60%
Miles: 15,000

This time I don’t want to put anything down and was hoping I could pay at most 330, but based on my current lease I’m not sure if that is possible.

Any suggestions as to what I can negotiate with them?