the "couple of ounces a month" is the prob.
You would need three grows, growing, to do that.
When you start your seeds, it will be two to 5 weeks VEGGING, and 8 or 9 more weeks in the FLOWER cycle. That is 11 to 13 weeks on average, in a Hydro grow. If you smoke an ounce a month, then you need to harvest 3 ounces every 3 months.
I'd get a 5 gallon bucket, $10, or a 8 gallon rubber maid tank,
Rockwool cubes, $5.00
Cups, 3 per bucket, $3.00, or 6 per tank, $6
2 85 watt CFLS, $60
a air pump $14
a water pump, $29
two long air stones $12
Irigation hub and tubes $34
nutrients $30
seed,
and start with that.