#2
Same as any other strat: usually somewhere between 7-9.5 pounds, trending slightly heavier on cheaper instruments and lighter on more expensive ones, and varying significantly between individual guitars even of the same model.
#4
Huh, must be a new model, the HSS one is alder. Should just be a little more, mahogany strats are still usually under 10 pounds.
#6
Didn't like the HSS model much, but I'll have to see if they have one next time I go to the shop.