Haha damn bro that's a lot of light per sqft hey. Even i'm pushing it with a 600w in a 1.5ft x 3ft but if you've got enough height to put the light up you should be fine. My 600 is sitting just on the recommended 60cm above the canopy, a 1000w will need at least 3ft...really keen to see you do it though dude, people said i was crazy with my setup but we'll see how she goes
if i get .5-.75g/watt man i'll be very happy! Hard to tell though at this point. If you had your 1000 in the 5x5 you'd be sitting pretty much on perfect amount of light per foot!
Nice work on getting the floralicious hey, so far it has worked a treat in my setup, however i did have to take it out for a week and start back at half strength as it is potent shit. It's a good blend of hunic acids which help with uptake of macro nutrients so it is really good stuff. I'll be using it in all my grows from here on
800ppm sounds good for veg too, mine sat on about that for most of veg and seemed to work real well
the only thing i would suggest is to get either some silica majik from flairform or silica from cyco and use it from start to finish, i hadnt realised how important it is until this grow and my outdoor sugar haze is looking amazing because of it too. The dyna gro should be good as base nutes too