Without lighting indoors growing is not going to happen, all your research you have done so far is useless without lighting.

Another excellent place to start for research is you tube....tons of videos on growing.

I bet I have spent over 100 hours just doing research on this site and over 100 hours on watching videos on growing on you tube.

As you can plainly see growing cost money....and It's not easy to grow.

check out some the of the excellent grow logs.

If I was you and was very serious about growing 4 plants and wanted to be successful.....HERE IS BEST TIP I CAN GIVE YOU.

Try a grow like shaggy did on this website.....search bubblers...

he got 3lbs PER plant....and did it several times. I would of patterend my grow after his SAGE advise...but I did not find it until my grow was going...he have pictures and step by step instructions...

It will cost you about $2,000 for the complete setup....possibly less and you will have the best hydro setup there is.

Now it is totally up to you....

try something and start your grow log....