I set up an extra cooling intake by drawing cooled air from my bedroom AC floor vent, I have a heat pump fitted to the house.
The temp was still too high.
I have to agree that 1000 watts seems too much for a 4x4 grow tent so I will try a 600 watt setup.
From what I am reading the 600 watt systems get a better lumens to watts ratio, ie much more efficiency.
I should also get anywhere between 80,000 to 100,000 lumens from the bulbs which should be more than enough for 16 sq ft of grow.
Savings on energy will be a bonus as well.