Alright dude
Looking really nice, your plants are nice colour.
Your doing very well dude
HPS is def the way to go, I'm using 3 of them at the moment
600watts, have 2 in one tent and 1 in the other
Seem to be working very well for me
I put my plants into flowering wen they were 5 weeks old from seed and it seems to be working out very well for me
Check the pics out in my journal and you'll see just how good the HPS is to your plants
Happy growing dude