the yellowing of the lower leaves is kinda normal once the plant starts to flower. You still have to feed the plant some nitrogen tho. And of course an early bloom food would have that in it..
the girls will put on the crystals(trichs) after bout a month flowering...
cant think of a thing to help you with the oder......the neighbors are just gonna have to buck up and shut up if this a legal grow. I dont think the oder is gonna be that bad off only a few plants anyway. I got twelve and they are in three to four weeks of flower..and unless you are right in the middle of them.....you cant really smell them.
But i am sure they will get more stinky as the summer closes.