I think you are under estimating what the RCF speakers can do, massively!
I've got a pair of RCF 735s, they'd demolish the Barefaced without breaking a sweat.
It's s fairly simple to understand that a pair of cabs we use to amplify, drums, guitars, three vocal mics and my bass without the need for a sub or backline are going to have no trouble against a conventional bass amp if used purely as a bass amp monitor, there is no situation where a pair of RCF cabs should be maxed out when used as stage monitors anyway!