I think you are going to have a problem getting to a good number if the vehicle has a 60 percent residual after 3 years and 22,500 miles. You’d have to get a much larger discount off of MSRP.
For comparison, the numbers for the Q5 are .00156 MF and 56% residual for 36/15 according to Edmunds.
That’s 13% off MSRP, which is doable on the right model. It really depends on how they are selling. The worst they can say is “no”. That brings your payment down to about $620/month using the calculator.