I'm a hobbyist that builds a couple of pieces of furniture a year so I may not have the best advice.
Presuming you have 4/4 stock I would be concerned that a power feeder on a jointer would flatten the rough board defeating the purpose of the jointer.? Once dimensioned I would use the power feeder to feed your material through the shaper to cut the tongue and grooves.
By the way, I do have a CF741S and a standalone Northfield 16" jointer and planer.? I bought the jointer used and it came with a Felder F38 power feeder.? In a little over a year of owning the jointer, I've used the power feeder just once.? I was milling some wide (10 - 15") 8/4 Cherry.? The Cherry was all about the same thickness so I could adjust the feeder more or less once.? In addition, the wide 8/4 material didn't flex much under the pressure of the feeder.
