You want some other system besides the strips, then get some other
system inline with the air coming off the primary system.

Or put a booster unit in each room

Or put another ducted system in, either figure out how to make it share
the same ductwork or put in its own ductwork.

Any way you look at it, the central booster is a dog. And that dog
don't hunt.

And in the furture, it's Mr. Ape Sir to you punk.