I spent weeks looking before just picking up a very similar 2011 535i myself. You're price (out the door include tax?) seems to be in the ball park to what I saw for a CPO. I purchased mine 2 weeks ago has all your features plus prem package 2, upgraded stereo, windows shades, etc. Mine is not CPO and I got it for 40995 (plus tax).
11 F10 BMW 535i : Dark Graphite Metalic/Black-Anthracite : Premium/Premium 2/Sport/Camera/Park Distance Control/Heated Seats/Convenience