I just grew 10 plants about close to the size of your plants. I got roughly 3.5 zips (98.7g) dried total.

so in your case...
(13/10) * 98.7 = 128.3.

I'm gonna guess about roughly 120-140 dried grams, somewhere between 4-5 zips (QP). What kind of lighting did you use BTW? I used a 400w HPS but I'm thinking of upgrading to 600w for my next grow.