Very good questions I would like to know as well. I have heard that miracle grow will make big buds but they won't be as good not sure if this is true or not but I feed miracle grow once every 3 week's and I use dnf grow and bloom a&b formula
Yes I've heard a lot about this my doctor told me you could also add the cannabis to regular tea and it works the same but straight would be fantastic. I also made stem tea once and it took about a pound or so of stems and a lot of boiling we got a bit of a buzz from it.
Fantastic idea definitely sounds cheaper then buying one. You could probably sell them to local growers in your area for double what it cost to make it