Looks good for week 4. The temp looks a bit high at 28C in the day, though its more forgiving of this in veg than it will be flower and some of the rooting stuff and nutes you are giving it may be providing the plant with things that help resist higher temps too. Though I would be on the lookout for heat stress as you are pushing the envelope, from my experience with it so far.
I'd also start dialing the humidity back, if that 66% reading is accurate.
You're about to start flowering, if you're not already seeing pre-flowers now, and for early flower/late veg I don't think more than 50% humidity is desirable. You have to start high, because the plant initially uses the leaves to "breathe" water as the roots are not established; but once you're into true veg, they are and in true veg the humidity can begin coming down under 60%, about 5% a week. In week 4, you'd therefore want only about 50% humidity as the plant now needs to 'sweat' through the leaves (especially if combined with high heat which means its drawing in more water and nutes too) and at 66% in week 4, humidity is so high it interferes with that process.
Its looking good so far though.
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