Dealer A is a solid discount. I’m guessing given the upfront payment you’re in Seattle and that part of that upfront cost is the tabs.
Two suggestions:
(1) You don’t need a $1590 service plan on a 3 year Subaru lease. Just my $0.02.
(2) With that level of discount, it may be worth running the numbers on a Limited - the money factor is a bit higher, but the residuals are 2% higher.
If you’re in the Seattle area, ping me and I can refer you to a dealer I’ve worked with in the past and referred others to. If you’re not working with them already (I think you might be), you may be able to use them as a sanity check.