Just had a look on your sample site, That is not looks good better for my openion, Since you are starting up a new business, you need to make a good impression on the UI/UX. I hope i can help you on that. Also, this app can be written better using HTML5, Javascrpt, CSS 3, and some java script framework like Bootstrap, JQuery, Durandal for UI to come up with a stable Web project, and can use the Asp.Net Web API for a strong REST API which can deal with SQL DB.