I started out with a 2x3x5 grow tent and quickly upgraded to a 5x5x6.5 model walk in style similar to this: tent
For lighting I went with a Spider Farmer 100 watt model on a timer. I use a Vicks brand steam humidifier and a small room heater, both on controllers. If you have the available floor space, this might be a better option for you since your collection will inevitably grow. If you want more details just ask.