Looking to replace Sales, inventory etc.. to make FA work for real estate.

Company agents
Properties for sales which can be converted into a sale transaction or leased transaction
Properties bought.. 

Has anyone done any kind of mods similar to this?

I am new to FA.

any ready modules or ideas how to make FA work with a real estate transaction.

Where can i add a "deal" for example purchase of property then accept deposit on it (if one exists). Connect transaction with a contact card.