Wordpress MU Plugin / Modifications needed

Hello, we need someone who can help us with a couple plugins/mods to achieve what we need. We're putting together a WPMU + Buddypress site that will be used for communities (neighborhoods) and want to add some extra fields to the Blog, such as location City, State, Zipcode, and Comments. We'd also like a search plugin that uses the above fields to display communities on a clickable map. This way, people can find other communities in their area. We'd like to add this to the homepage in a widget position. I'd like to get started right away! Thanks