TMV - you know you will have sellers remorse after all youve invested into the vehicle.

Regarding pricing...prices are all over the map with these things and they really havent developed the cult following of e39 or e36 etc as you know. I'd say drop a few lines in the pond and see what happens (do not go to bottom feeders on craigslist but dont think you will). Worse that could happen is you get no response and theres your sign to keep it.

For reference the last e53 EAG had that I recall seeing was just under 90k miles was estoril 4.6 and his price was over $18.5k. I dont remember list of repairs/records but that was at least a year more likely longer than that.

Good luck!