I have a brand new Goodman all electric 5 ton heat pump package unit on my roof. I have two 16 x 20 supply air filters (one in front of a vent and the other on the opposite side of the same vent in my house). The tech told me to use the fiberglass filters, I assume to increase air flow. He told me my equipment would last longer that way. I prefer the quilted filters, about MERV 7. Are these two supply sources enough to properly supply air to the 5 ton unit. I upgraded from a 4 ton GE (non heat pump) package unit.