I just found in my parts list a couple of MRF24J40MA modules, I am not sure if it is overkill for my needs but I will look into this.
What are you using for switch/dimmer and plugs?
I guess maybe digital pots and triacs for dimmers and relays for plugs...
My biggest concern at this point is to supply the 3 to 5 volts to each plug and switches, adding even a small transformer would take quite a bit of space and for the switches, if the live wire does not arrive at the switch, by turning on (closing) the switch I lose the power don't I?