You could have got lots more and a lot sooner had you not defoliated so heavily in week 12.
All the plants energy comes from the leaves.
Less leaves = less energy being made = less growth.
It really is that simple!
Plants can not divert/channel energy, all energy is used equally wherever there is growth occurring.
The biggest misunderstood principle when it comes to growing is "leaf removal causes the plant to divert energy into bud growth".
Since ALL of the plants energy is made by the leaves, how can leaf removal result in excess energy being diverted to bud growth???
If you are worried about the lower parts of the plant not getting enough light, instead of handicapping her with drfoliation, use a lot more training and get her growing more horizontally instead of vertically next time around.
To be honest, for 5 months it is not a lot, but I am sure you gained a wealth of knowledge and it is always extremely satisfying harvesting something you grew yourself!
Perhaps upgrading your light for your next indoor grow would see you harvest more and sooner too. but now that you are entering the realm of outdoor organic growing of photoperiod plants, hopefully you will realize autos really are a waste of time and effort.
Especially outdoors!
Try some Sweet Seeds photoperiod seeds outdoors, the results will blow your mind!
Purple Punch OG, Indigo Berry Kush, Gorilla Girl, Black Jack, Do Sweet Dos, Zenzation, Cream Caramel, Gorilla Sherbet, San Fernando Lemon Kush and Tropicanna Poison being some of my favourites and highly recommended.
Barneys Farm also have some good ones, Shiskaberry and Blue Sunset Sherbet especially.