Math, math, math, math. HID light put out lighting where approximattely 85% is heat producing wavelength. A typical air cooled light removes about 50% of the lights heat. (6 lights * 1000 watts/light * 0.85 <heat percentage> * 0.50 <percent removed> * 3.41 btu per watt) = 8695 btu's of heat. Window air conditioners are typically rated at 12000 btu per hp. If you do not have a window in your grow area your talking about $750 and up for a fair two hose 1200 btu portable unit or $275 for a standard 12000 btu window unit. Single hose units are about $100 less but then your also exhausting your odors and your CO2. I use window units that are modified so that I can use them down to 40 degrees below zero. It requires a head pressure controller for $50 off eBay and a compressor crank case heater to keep the oil warm. They run about $35 new or about $7.50 to $10 on ebay. I have been using them as such for over 15 years and no one has ever said a thing or asked why they run during the winter. I also use two water chillers made from window air conditioners that have their compressors and condensors out side and they are also used all year round.
Either should also handle your dehumidification as a 12000 btu will dehumify about 50 pints per day if run constantly. My self I in addition also use a cheap $100 Sears 5200 btu window air conditioner also set completely inside the grow room hooked up to a humidistat to assure low humidity when the airconditioner is not running. The fully inside airconditioner exhausts into the grow room so there is no real temperature change just dehumification. It is much cheaper than buy a dehumidifier, and has a much longer life span than a dehumifier of the same capacity. It uses 19 watts more than the comparable size dehumidifier as it has an extra fan. For a third less cost I can live with that.
You do not need the absurdly expensive controllers such as you mention. Just rip out the wiring to the digital controllers in the airconditioner(s) and wire them to run 100% of the time and then supply power to them by a line voltage thermo stat and a line voltage dehumiditsat. You can likely get both for less than $75 (with shipping) off ebay. That is for both and for brand new not used. Neither of the controllers you mention are worth what they cost. They are really designed more for fan exhausting systems and CO2 control. Seperate thermostas for cooling, heating, dehumidification and CO2 ppm controla are much cheao per and safer as all you chickens are not in one basket as with the combined controllers. A good ppm CO2 controller is only about $350 on ebay.
http://shop.ebay.com/?_from=R40&_trksid=p3984.m38.l1313&_nkw=CO2+ppm+controller&_sacat=See-All-Categories
