I can't speak to leasing, but my father bought a loaded 535i 4 months back, and he got a HEFTY discount, nearly 10k off of sticker.
However, he kinda lucked out, in that it was a special order car that the person who ordered drove for 200 miles and returned. The BMW dealer knew that he was waiting for a 535i with a stick to test drive, and called him up. Apparently, a white/black car with a stick is a profundly unpopular combination for any 5 series, so they cut him a good deal.
That residual number isn't bad.
If you want to get a quote from another dealer, I'd reccomend calling Mark Carvalho at JMK BMW in Springfield. 888-500-9011 ext 240. Tell him Charles Vickers sent you. He should be able to give you ballpark numbers on the spot.
Your numbers don't look bad at all. I might push for a little bit more of a discount.