you can get 2700k 105w e27 cfl`s for like £10 each maybe $10 each if your in the usa you can pretty much flower a plant under one of them if it`s not too big
I`d get 4 to 5 of them set up for 2 to 4 plants bam done you`ll just want a fan and some extraction.
I use a old watering tub, the way i set it up is for a different time. I use my 1000w er for veg and flower, i have some of the best shit this way. two plants to a 50 gallon tub.