keep in mind that the kit pictured does not full length size the cartridge case. You don't need to full length size if you are using brass fired from the same rifle that you will be using the reloads in. If that is what you are doing, you are fine.
But if you start using brass fired in other rifles, you may need to full length size in order to get that brass to chamber in your rifle.
When it comes to scent, there are basically two types; those that attract and those that mask. I've tried both on many occasions. There are lots and lots of "doe in heat" scents, designed to attract a big buck into range. I've also used a "cow in heat" scent while elk hunting.
Another scent would almost be better named as a "coverup smell". The main goal is to cover up human odor or mask it. Though I don't believe you can ever totally eliminate all human...