Some thoughts:
I think that you are employing a good strategy to sell your domain, i.e. build a fully functional website to demonstrate how the site could be used.  
Your English, though good, is not perfect.  There are a few turns of phrase that make me suspect you are not a native English speaker.  Getting a native English speaker to check it through might be a good idea.  
Is the domain name strong enough to get offers?  Only time will tell.  
Rgds