Time & Material with Jobber

I have been considering Jobber for a few years, along with other systems. I have only pulled the trigger with QuickBooks, which a hate every day. But I digress. I am diving in this year with the goal of finding out the best way to use Jobber, as a time and material business that relies on creating customer trust prior to signing a customer for the first time. I cannot just rely on a system whereby my customer says, i have a broken pipe and I need someone asap. As a handyman, my customers have many jobs of all sorts from day one. Most people are used to estimates, but are amenable to time and material. How can Jobber, and possibly other tools in connection too (suggestions welcome), help me with my goal of going from a soloprenuer to a multi-city organization that is run in this manner?