Site build to display a Pinboard feed

Want to build a site ('PlaySpace') that uses an existing Pinboard ([login to view URL]) account. SITE FUNCTIONALITY Basic functionality of PlaySpace is desired to be as follows. - Main purpose of this site is to load the URL of the latest Pinboard bookmark into the browser. Ie, if [login to view URL] was added as a bookmark, PlaySpace loads/displays google.com. If [login to view URL] was added as a bookmark, PlaySpace loads/displays facebook.com. - At a given time internal (e.g., 5 minutes - a variable that we can manage) PlaySpace checks to see if a new bookmark has been added to the pinboard account. - If new bookmark exists, it loads the URL of the new bookmark. - If no new bookmark has been added, PlaySpace remains as is. - If new bookmark has been added but a user is currently interacting with the URL loaded on PlaySpace (via mouse movement detection or otherwise), PlaySpace remains as is and checks again in another 5 minutes. DESIGN We don't believe any design should be necessary but if it is, this can be provided to you. Happy to discuss the requirements here. PLEASE RESPOND TO THIS BRIEF BY - Commenting on the feasibility of the proposed functionality and any alternative solutions - Asking any questions that you need answered to respond - Providing amount of time needed for development and fixed price cost for the work