CRM for a team of 3

We're running a small marketing team for real estate. 2 salespeople and I. I want a CRM that is cost effective, and that can do these basic functionalities. 1 – import Facebook leads automatically, 2- send payment reminder emails to clients in the future to remind them of their installments and 3- where I can basically track the customer journey and where/ which as the customer came from if possible. I'm new at this, so I'd love it if was something simple that I can set up in a few hours. Thank you guys!