Humidity issue

Absolutely no need to use distilled water, just use tap water!

Why on planet zoobtron would you want to ever go above 60%rh? What's the RH% during nighttime cellular respiration? Is your rh 60 daytime? With that many plants, once they get a little hit bigger they will start to spew moisture out at night Into the air, come flower you will have difficulty keeping it under 60.

Turn down the Aircon a bit , add some wet towels or just more water into the tent Might look into a controller unit that balances that out automatically ( or a bigger Humidifier) Also usually the first few weeks use a lot of distilled water for the Humifiers thats just how it is, will get better when your plants get bigger and start to regulate the tent itself a bit.