A module to display resellers (A group of customers in my shop)

[Stephen-FFC]

Any customer whose cart total exceeds a certain amount will have their user role upgraded so they can get different pricing. This is our simple solution to setting up resellers/agents. Buy in bulk once, and get wholesale pricing from then onwards.

As an added benefit to them, we'd like to display these agents on our website so our customers can also buy directly from them instead of through our shop (buying from a local agent will save them a courier fee).

Does anyone know of a directory module that will list these agents, display them on a Google Map and be searchable by location? The real problem will be that they must add their own details themselves so it probably requires some form of upgraded membership module as well to give them frontend account/profile management and custom information fields. (I can't edit all these agents and do it for them as Admin because we may have a few thousand to add over a few months.)

Here's holding thumbs.