If you don't smoke a lot or want a really small stealth setup those lights will be perfect.
If you have a really well controlled environment, good lighting placement and LST you could probably get anywhere up to a 1/2 ounce. Grow time would be up to 3-4 months.
I would recommend only one small plant or more lights. Problem will be ensuring that the seed turns out to be female. If you can acquire a clone from someone it would be a better option. What are the Kelvins on those lights? eg. 2700K, 5000K, 6500K.