Winterizing Question

Heyo folks, question about winterizing our new to us (2015 Coachman Clipper) pop up. We've emptied the water holding tank. Hot water tank is next. We've shut the outlets going to the hot water tank. Are we okay to pour in the antifreeze next? Is it crucial to run the water pump before or after the antifreeze is added? Note: we don't have any other plumbing (toilet/shower).