Fans installed in the canopy will be needed longterm to keep the temp cool, especially when you upgrade the lighting. That hood looks pretty empty and quite moddable. How handy are you with tools? You could consider purchasing a T5 or PC retrofit kit and installing that in your hood if you're mechanically inclined enough. Or you could consider just replacing the hood if its a somewhat standard length (20", 24", or 30")
Edit: You get the water out by putting a piece of flexible tubing in the tank and siphoning it out into a bucket below the tank
Edit: You get the water out by putting a piece of flexible tubing in the tank and siphoning it out into a bucket below the tank