I am in the boat as you. Tried to find a decent lease but without much luck. But after asking for some advise here on LH, going to go the find the best deal you can get off MSRP and then go with the BMW owners choice program (of course am in the marker for an PHEV so the Xdrive40e).
See thread here.
Are you really seeing 18% off MSRP here in in Texas? Where are you located?