You're in a financial pickle here.

You're severely upside down on your car note. What are your finance terms? Did you purchase a brand new leftover, or was your coupe used? Owing $23k on a 2012 2.5 coupe is not good.
You can see if a dealership is willing to work the numbers for you to trade into a 3.5SR, but I can tell you this. Based on the numbers you presented, you will also be upside down on your a 3.5 SR too and will most likely need to finance your car for 72-84 months just to afford your monthly payments.
Most lender are only willing to finance 110% over a cars value to address trade in rollovers---- a $10,000 rollover is insane and exceeds the rollover threshold. Any respectable sales/finance person will not touch your trade in because they'll feel bad for you and know you were most likely duped on your purchase.
Your best option is to keep the coupe for 3-4 years to pay down your balance, or be prepared to have a $5,000-$10,000 down payment to trade your car in.
