[left]The fan and light switch are daisy chained with 14/2 Romex. I want to change the single switch to a stacked switch so I can control the fan and light separately. Is their an easy way to do this without ripping walls open [/left]

I am thinking put ceiling lights on my old rooms (living, study, kitchen). I am planning to install 12W LED recessed lights for this purpose. Few questions for you experts here: 1. if you were I, go dimmable or not? 2. if I buy dimmable lights, I need to install the dimmer switch. Is this the only difference? how to wire the circuit is the same for both cases? 3. there are several different type/style of dimmer switches, any recommendation? 4. my ceiling height is 8'. I am going to use 12W lights. how far away between each lights? 4 feet? 5. how to cut holes on the old plaster ceiling with metal mesh? thanks,