I have rf fans also(6 speed) and comes with a light. In my case for sending the rf commands I use openmqttgateway. As for the fans entities I use the template fan one with a combination of input_number and input_boolean for the state and some scripts that fire the mqtt command according to speed. I can post later on the template fan yaml so you get the idea and you can adapt it to your setup.
As for having a 6 speed fan displayed in Lovelace I use a custom card that’s being around the forum.