I think you should start your modeling right away and wait to have sex with people.

You know you want modeling so go for it.

You are confused and do not know what to do about partner sex so wait.

Also, you will need time being comfortable with having the images in public.

Don't worry - there are lots of erotic models, and there is lots of info on the web, and in general there is a huge overload of all of that, so the chances of your getting noticed are not so big - your pictures, however charming they turn out, may sink in the sea of information out there. So be realistic and do not expect all your contacts to point fingers at you, not because they are or are not judgmental but because of the sea of information issue.

If I were your age, I would most definitely do erotic modeling. Plus, you will get pictures that you can cherish when you get old. Having sex with guys you do not particularly care about won't produce such memories, which is another reason why modeling seems to be of a higher priority in your case.