Social Wifi - captive portal hotspot for guests and embedded firmware

We are in creation-phase of our Company We want to provide free WIFI access for guests in exchange for 'facebook like' or twitter follow or for an email address on the restaurant's facebook, Twitter. These are simular products that we woudl like: [login to view URL] like this featured [login to view URL] [login to view URL] [login to view URL] For example: My customer has a restaurant or cafe . We want to sell an access point where his guests can login to surf the web. But, prior to their access, they must like; their facebook page or follow on twitter or field email address. When the guest chose to login with facebook, he must like FB page and a post to his wall appears to say he s sitting in that restaurant now. (or whatever message) On the second visit, or with another device the guest can login with facebook without liking the page again. When the guest choose to login with email, his email must be added to database which the restaurant can manage from the dashboard. You may choose these hardware. mikrotik 951 series or tplink 841nd or you choose but which one is cheap its best :) If you accept this project: I would like to receive an estimate of the total price, an end-date. The 2 thing that are most important to me is good communication and reliability. and we wants dashboard for our customers . they will see the graph about how many like or follow . like [login to view URL] site pls look that ... and when our customers login their dashboard they can be change redirect link when the guest is logged in the hotspot. for any question pls ask me and i tell more details about that project Roberto