Hey Neil,
I think they're looking great so far...and now going into flowering they'll do a nice boost of growth which is always exciting.
I think the only thing is i see a few leaves that look sort of cupped under and a little twist...if this were my grow I'd give them 4 hours of darkness. All living things need rest, and you're running so much power on them with the hps, led...just a personal opinion...a little sleep is nice and healthy. 😊