I agree, I left that part out....you want at least 100,000 lumens for ultimate growth. Best to use seperate pots that way you don't have to un-tangle roots later. Especially if you end up with male plants...that would not be good.
This is your first grow right? If so, you're on a learning curve....keep in mind you're learning as you go. What I have found is that it's best to have your plan and equipment laid out before introducing plants - minimize shock and trauma to the plants.
I know what you mean - every grow needs a budget and it's easy to go over budge if you're not careful but you need good equipment for a decent operations for yourself.
My friend and I are in $5000 already and that is not including our trip to Amsterdam next Month.