Add Buddypress @mention functionally to AWPCP comment plugin

JOB: I’m using awpcp for wordpress to create a classified ads website (for people to swap stuff they no longer use, not sell it!) Awpcp has a comment form plugin but it’s extremely basic, out of the box it just adding plain text to the bottom of the page when someone comments. The awpcp pluigin is needed to integrate any form of comments. (i.e. I was able to replace some of the php in the plugin to add different comment types, but it has to be through their plugin. The AWPCP "listing" pages are not custom posts, from the looks of it they're generated on the fly and all displayed through he one same page. I’ve been able to edit it so the username links to the users buddypress profile and username autocomplete is set up in the comment box but I don’t have the wherewithal to fix the following: – Mentions on the comment wall don’t link to the user profile – Obviously, because that fist part isn’t happening, users aren’t notified when mentioned BUDGET: I’m not really aiming to make money with this site, but obviously I’ll pay whatever the going rate is. If you can give me a rough idea of how long it will take and an estimate of the cost that would be great! Thanks!