I like the cardboard doorway setup.   

I have wondered why the Avalon's don't come pre-packed with the controller but it has to be purchased separately. 

You are right about the noise, however our 6 year old son sleeps with a noisemaker.  I just turned that off and put the ant miner l3+ I have in his room.  closed the heating vent to his room and let that thing heat his room. 

We have an old house (1950's) and so not really insulated.  Our gas heater was running to keep the house at 72 and his room was the most comfortable in the house.  lol. 

I told my wife we should buy one for each room.....yeah.  she said no.

But back to the avalon controller,  have those worked well being separate?