I'm using a 200w Hydrofarm CFL in a confined space as well, and it's working out well. I doubt that it's worth it to use the red spectrum CFLs. One idea is to get some inexpensive red spectrum CFLs used for house lighting and add them to your current setup. Or maybe try some Solaroasis LED grow bars, which is what I'm going to switch over to soon. LEDs will use practically no electricity and give off almost no heat.