Considering you have pretty much exactly the size i have and by looking at my plant i get around 1-2 oz dryed medicine from mine.

Get powerfull CFL lights both 6500k and 2700k. let it grow foot long and start flower phase and by switching the CFL bulbs to 2700k you turn veggie room to flower room.

You can put CFL lights pretty close to plant but the ballast in the CFL are quite hot in small rooms like mine tempatures go from 85f to 95f but its not a problem if you have good enough ventilation.

just get some bulb fixtures and cable to "hang" the lights from top 7000 - 1000 lumens for 1 plant is enough.