Wow, you got a great deal! The ozone will run during the filter cycles. I would recommend running both filter cycles 3 hours each, so 6 hours total.
I have sold both Marquis and Caldera over the last 5 years. I have always had good luck with the bromine when using the 200G cartridges that are available through either a Marquis or Caldera dealer. When using the standard 150G cartridges, I had all sorts of issues with there being enough bromine in the water.
SmartChlor has been my preference since Frog released it in January 2016. I'm not a huge fan of bromine, so I would suggest smelling bromine prior to making your final decision. Cost should be similar. I sell the SmartChlor cartridges for $1 more than the bromine cartridges.