hehe, np bro,, the theory goes --> it is impossible to ever have TOO much light.. so of course, you can always use some more light, heat would be the only factor to keep an eye on - but considering a 12 ft^2 space and those particular lights, I would say total wattage could be increased - you have a pretty wide array of frequencies (spectra) which is good BUT another factor is lumens (number of photons emitted per second) and for that space even a 1000 W HPS would be just about sufficient (luminescent-wise) and if you were to add up the luminosity of all those lights you have, it would not even come close to the 55,000 Lumen output of even a smallish 400 W HPS bulb ; and since lumens not wattage is what heats the air, which is why even when all the lights are on, your space is only 70 deg, not to mention that all of the lights are off at night because of your flowering ; not suprising that at night it drops to 55 deg.. invest in like two HIDs (one for the veg room - Metal Halide) and an HPS (maybe 400 watter) for the flowering room and even at 'night', the heat from the metal halide in the veg room should keep your flowering room above 60 deg even though hardly any light gets into the flowering room..