Honestly dude, you probably should not have signed up for this. From the questions you are asking I am not sensing a great deal of experience and if you took money from people you are going to have to get it back to them and growing in bulk makes for massive problems when they do happen. If you just want purple pot then drop the temperature at night. I don't really see why it matter though because the fact that it's purple doesn't mean anything about quality. It just means it's purple. Also, if you got a shitload of money from investors then what did you spend it on if you only have a little bit of equipment?
you can put, at most, nine plants under a 1000w bulb in my opinion. If you are really serious about trying to do this and you have a lot of pressure on you then message me and I can help you.