Are those two statements saying the same thing? The plants look great and the soil does not look too wet. I just wanted to make sure you know I'm not telling you to water every day, especially at this stage.
I recommend adjusting pH from the very beginning.
This my light schedule... unique to me, based on information I've picked up and experimentation... Under cfl 'til second set of true leaves or sex, if I'm using cfl's. If I'm starting them directly in their pots, like you are, I might put them under the MH from the beginning. Either way, I keep them under the MH for about two weeks into flowering and change to HPS. When I see the first sign of the fan leaves starting to die off, I switch back to MH and start my flush.