Both are doing great! Finally got the temperature and humidity corrected enough that the plants are stressing less, and i also increased the lights back to 200W after 5 days. I think they're large enough now to handle more light - going to increase the light slowly over the next few weeks as well.
No other issues - haven't had to add much nutrient solution or anything really... ph is super stable in both reservoirs as well.
All that being said, I know the reality is that i'm going to run into a bunch of issues now that i've said i haven't yet.