When to cum

So I've added two galleries and I've decided that I must masturbate to EACH photo in the gallery for 5 minutes before I can orgasm. I'm totally into orgasm denial so trying to decide if 5 minutes is enough time spent on each photo and if it should be all the photos both galleries that have to be masturbated to before I can have an orgasm or just one. Of course it'll have to be a ruined orgasm.