Adjustments to BuddyPress social network

This is a simple task. We expect bidders to stick to their bids and we are not open to negotiating bids upwards in chat. The task should be easy for an experienced WordPress and BuddyPress social network expert. We do not expect that it would take the freelancer hired more than a couple of hours. The task is comprised of two parts: 1 - Facebook: Implement Facebook login as an extra option. Our website already allows users to make an account with us, but we want users to also be given the option of logging in with Facebook. Also, users should be allowed to share comments and posts to Facebook. 2 - Posts: We want some specific aspects of our posting system to be adjusted. Users should only be allowed to post to others' profiles only once a week and should get an error message saying they can only post once a week if they try to post more frequently. To be clear, users can post to as many walls as they want (as they can now) but can only post on any one wall only once a week. Posts from previous weeks should be shown further down the page, and should be accessible by clicking on "See older posts" (this is similar to Facebook). Secondly, if the owner of the wall comments on a post on their wall, their comment should be located immediately after the original poster's comment and should be titled "response". Again, we expect bidders to stick to their bids and we are not open to negotiating bids upwards in chat. Anyone experienced with WordPress and BuddyPress should be able to do this quickly. Therefore, we do not expect high-percentage milestones and will be looking to pay the majority of the bid's price after completion of the two tasks. We intend to choose a freelancer quickly, have them complete the two tasks swiftly and pay them immediately.