Wow! So that's what 30 pots of HC looks like. I can see that this will be a very Epic scape! Just a suggestion, find the lightest pair of scissors for trimming. If you do this your hand will thank me in a couple of months lol.
I REALLY like your stone arrangement. Im not one to try to critique other people's scapes, but IMO, the sand on the left is really taking away from your excellent arrangement of stones on the right. Especially once the hc fills in, that bare corner will be very distracting. Again IMO so just a suggestion and your scape still looks great.
yeah im not sure, it doesn't seem there is a direct correlation bettween height and plant growth in the tank, but w/e its growing everywhere just slower in some parts im fine with that it will eventually cover everything