Hey there! Pretty jealous of this plan as I have recently fallen in love with catfish!
More research is still needed, big fish in big tanks takes a lot of planning. The glass cats are incompatible with the synos due to parameter issues, I think you are best off leaving them out.
I can point out now, that upside down cats are schooling fish (though often not thought of as such) and do better when they have some company. Rope fish as well should be kept in at least a trio as they tend to enjoy snuggling with each other- and be sure you know what you're getting into with these guys as they are huge trouble makers!