yea keep it simple .. enjoy what is a succes to you ..
up scale ???..
well even if you dont feel like doing much diffrent .. ther is a few small things that realy dont cost much you can do and I bet you can pull one OZ per plant next time ..
I reccon you didīt grow autos ? try to look in to that .. might cost a littel bit more a seed .. but if you only grow two plants evry seccon month I reccon them +10$ wont hurt you wallet ... and with light leaks aso. it will be perfect for you to grow and will for sure give you a lot more ..
a cheap PH test kit/PH down or up wont cost much more and will also make a hugh diffrent Im sure ..
can allways do it a littel at the time and do the things you might enjoy and find nesseary/easy to do .. some good soil and all them small basic stuff all make a littel diffrent for small money and nobody force you to do em to day
best of luck on your next runn