Hi again,
For the amount,its better to find your sweet spot for the products so probably best to start with 1 spray and try each product by itself first and increase by one spray till you find what works best for you since everybodys different.Application order isnt really that important unless your doing layering.Then maybe ammo would be last since it has the strongest smell.The location would depend on how much self effects you want.Turn up the heat is probably good on the chest.Instant openness either on the neck or wrist.Neck will have more self effects and you will talk more,wrist will make other people talk more with some effect on you.Ammo is ok on the wrist or neck so its up to you.Theres a good explanation on sweet spots and application points in the thread below.All the best and have fun with your first order.