Flight Cage Setup Advice ???

Hello everyone! I scored this basically new flight cage off Offerup and I want to get it nicely set up for my two lovebirds :) The cage has these two holes right up against the top on the left and right sides (shown on the second attached photo) for which I had bought an external feeder and bath (also attached) without realizing there would be no where for them to attach properly because of how high up the holes are Does anyone know a work around for this as I really liked these or any other products that would work? I would hate to have to hang them inside.

Thank you!!!