Installing flooring in bathroom and new toilet
Is your new flange one of the metal repair flanges that attaches to the old one? If so this will make up any difference in height. When I set a toilet I work the new wax into the ring on the toilet so it seals. When I place the toilet on the flange I check that the toilet has a space before pushing down as long as there is a small gap the wax ring will seal, if the toilet sits on the floor I pull the toilet up and add some wax I normally keep a very cheap wax ring no flange to add to a wax ring but vinyl usually is not thick enough to cause a problem