What setup to use?

Electricity isn't really an issue with just one plant so I could just go for a 250w HID instead of 2 x 125w cfl? Would this be a better option? Also is it ok to use dual bulbs? or just get a red and a blue for the two stages..

if your going to grow in the ATTIC, for one make sure you have plenty of cool air going up there, second id highly recommend going with LEDs because they rarely top 80f of heat output when your running them, keeps your from having to purchase a ballast and keep your ventilation needs to a minimum, also keeps the heat signature out of your attic since thats one of the first things the ghetto birds look for when out "hunting"

going to grow a single plant in a cupboard dude.

2 x 125w cfl or 1 x 250w HPS or 1 x 180w LED??

Increasing price >>>>>

id go with the 180w led but you can grow a big bushy plant with 135w led