I have an okcupid profile. I originally made one years ago, after linking to an interesting political quiz and not realizing it was a dating site. I answered a gajillion questions and did a ton of tests, but for the most part just ignored my inbox.
I recently decided to use the site for what it's for. I made a new profile, a male one with my chosen name, and I'm taking the tests anew. I haven't listed myself as ftm on my profile, but I tend to tell people immediately when they contact me. Plus it's kinda obvious from the questions I've answered. The site algorithms frequently suggest people who specifically mention trans or gender concepts.
I don't take the site very seriously myself, but I do think you should change your gender marker. It isn't really being honest to put female when you feel male. Being pre-T and pre-surgery will be a turnoff for some people, but you're still a man.