If you're going to add them to your current shop, just make sure you're doing all the tagging and photos for mature items that you're supposed to. That's not my thing, but I know that stuff does well.
Personally i'd use a different shop as I've just looked at your current shop and it seems pretty 'user-friendly' I'm not sure that putting adult content in that shop would be a great idea as it may put people off buying your other things.