Nice. I'm not sure it will help much if you're using a complete kit like GO, moreso when you decide to deviate from the kits.
I agree with BL that you might consider soil next time. If you're used to soil and you jive with soil, it'd be better to use soil, than to use coco and treat it like soil, imo. I know that contradicts the growweedeasy site, but a root bound plant is bad in soil, good in coco *if* you're treating coco as a hydroponic medium. In coco you can grow a big plant in a 2g pot if you treat it as hydro, but it'd seriously stunt growth if treated as soil. If using soil, or treating coco as coil, I'd probably go from a solo cup to a 2g pot and then to a 10g pot and finish out in that. They need room unless you go hydro.