I haven't a clue. I'll guess 5 maximum. Because anymore than that really would mean you're weirdo. Plus your too slim. a man with 10 accounts would look like this

a man with 7 accounts looks like this

you probably max out at 5. you get away with that because you only write posts on 2 of them- the other 3 are VISUAL accounts where you just throw up your photos & what you claim is artwork.