I am a newbie and I don't know much about the ageing process but seems to me that maybe 2 systems will better control heat/humidity a heater on a thermostat and a humitiastat controlling a humidifier maybe even one of those cold humidifier won't affect temp that way you could control heat and humidity independent
You are probably right, although a lot of members are getting by with just a crock pot. I've only been playing with it for about a week. One of our members is going to add a system like you are talking about to his kiln/flue cure chamber. I'm going to watch what happens to his and may end up following him.