monitor the temperature at the top of the canopy and watch the heat. Does it come with an aircooled hood? If not you are only spending 40 bucks so go for it. Buy yourself a cool tube or an aircooled hood, upgrade the bulb to a Hortilux bulb so you can veg with it too and get a good blower to move the air through your cool tube or your hood and out the otherside of your room and you should be fine.

Try a trial run for a few day's before you put your plants in there and see what temperature yo can get.

40 bucks is a good deal dude even if it's only a transformer.