With your height limitations you may want to consider a T5HO system. You can have your plants within inches whereas the 400 HPS will need to be about 12" away. Also the height of a T5HO fixture is much less than a conventional HID lamp.
Another nice benefit of T5HO system is the 6 and 8 bulbs...
A nice plasma TV uses about as much as a 400 watt light. A 1500 watt space heater uses as much as one and a half 1000 watt lights. Bottom line is as a personal grower that should be no red flags due to electrical consumption...
I've used Miracle Grow Moister Control (and its Scotts equivalent) for all my grows (~6) and had excellent results. I usually mix about 8 quarts of Perlite and about 8 ounces dolomite lime into 35 liters of soil. I don't start my seedlings or clones in it though, I use Scotts Starter soil for that.
I just germed some seeds in a room that was 50F. I used a heating mat and kept the temp ~80F. Actually, used a heating mat from an old water bed of mine -- it was free worked great!
Me too. I smoked some in the 70s. It was very gold colored, smoke the tiniest pin joint with a couple of friends and was utterly toasted! The lung expansion was like nothing I have every had since...
I has the same think once with DP Blueberry. It had small flowers along the entire branch. It was pretty good, but a pain to deal with. You can't really trim the buds off, they're too tiny...