No. I wouldn't have taken the 2k offer. It would be more beneficial to develop, obviously. But you have got great skills which would make the site worth more, IMO.
To be honest, a dollar amount to me couldn't be placed on it right now (unless a REALLY good offer came up) since you actually have a great idea for it. Had you not told me about your idea, I would have said 2k offer is OK, but what you want to do with it works out so much better that it would be sad to let it go.