I would get HACKRC versions of those boards instead of BetaFPV. While you "can" put betaflight on the BetaFPV boards, it's not an officially supported board.

Otherwise, I use a BetaFPV ELRS 915mhz receiver with a HappyModel ES900TX module for my Frsky Taranis X9D Plus and have had zero issues and superb range.