I don't think I was diagnosed with PCOS though I did have a bad case of them and got them surgically removed when they went in after my endometriosis. I'm also not FtM.
I can't tell you what to not be dysphoric about, but there is absolutely no need to worry about birth control visibly "feminizing" you, it does no such thing. I have to take it, so I've done some things to make the routine work for me. First, I'd ask your doctor about putting you on a continuous cycle so you don't have to deal with periods (there are no adverse or even different side effects from doing this instead of taking the placebo pills), that will probably help you a lot. Secondly, I've stopped calling it birth control because that's not why I take it; I treat it like any other medication, and I will talk about it like it were any other medication. It's helping me live with a disease that's going to be there no matter what gender I am (that is, until I get my hysto).
None of the common side effects are guaranteed for anybody either. While I did see a drop in libido (which I like), I didn't get any of the associated weight gain, mood swings, depression (I had that already lol), more acne/less acne and so on.
Anyways, I hope that helps. And if you have lingering issues, please please try to work something out with your doctor before you gamble with your health.