Is this a troll thread? No matter what it's going to take you about 3 months to harvest from start, so why not actually get something from it? It looks like you have invested time into this and plan to invest time, time is money. With that said you are referencing that you value your money(saying you pay your electric bill and cannot add more lights) so why not actually make a return on your investment? If you spend 3 months to grow 3 grams you have lost money. Even if it's for fun, there's no reason to throw your time and money away, that's just ignorant... You should use your time to research and spend your time posting on here by actually asking us questions that will help.
It looks like you are super tight on space so look into the guys that grow in computer boxes or any other type of "micro grows".