Looking good and your PH is not too bad. You can go 5.2 to 6.2 and be good. There are 3 different acids to bring it down. Most comon is I think sulfurric acid, yes battery acid from auto store. Watch it it's strong a little goes a long way. Quick is lemon juice concintrate. I like to stay about 5.8 PH.
Temps are great , keep them there. Meters are the shit man.
Slowly bring you ppm's up. I can gat mine over 1000 but if the tips of the leaves start to burn cut back some.
Air is good. You got it tuned pretty damn good. Keep the pic's coming. I like to see success. Should be a good yeild.