My advice would be to ignore those offers (they should be taken after the dealer discount) as well as your trade-in and first negotiate the selling price of the vehicle. Once you are comfortable with that (in your area you probably should shoot for 10-12% off) then discuss what incentives are available, additional fees, MF (should be at base rate) and residual. Then ask them what they will give you for your trade. Once you have all of those numbers then a lease payment can be calculated and you can make your decision.
The Edmunds forum is the best place to get information on MFs,RVs and available incentives since they will give you the information specific to your area.
https://forums.edmunds.com/discussio...and-prices/p30