Hello Jeff
Welcome to Pherotalk 
If the wind is blowing the scent away from your targets they will be unable to inhale the molecule.
Not in a adverse way no, Animals will be more aware of it then people they communicate a lot by smell. I suggest you let them make a clear visual of you the first time or two you wear them. This why they wont feel nervous or think there is a stranger approaching them.
Kids usually react well to what you have listed, High anone or masculine products can make them a little shy much like they would be if a stranger with a masculine natural mone sig walked in the room. Once they know you or if they know you already it wont bother them.
Yes most of them do come off fine, You can get a little build up with anone products like AMMO. soap up really good on application spots and if you not sure if you have build up use a cotton ball and some witch hazel or peroxide to remove it. Like I said though generally a shower will do it.
Yes all products can be used as stand alone products and each one gives off a different vibe and attracts at different levels. You can also layer to get a few vibes going and up the attraction factor.
I do think because of shipping its a good ideal to get a few different bottles to try out.
AMMO Ishine IH and IO would be great.
Your GC will be in your email shortly
Tisha