This comment is probably going to be useless if you’ve already decided to gender-lock it, but I was going to go against the grain and vote for keeping the disguised-as-a-man plot. 
Anyway, I’ll take the chance to do some plugging for a favourite WIP of mine.
I believe Your One Moment did the Sweet Polly Oliver thing rather well — I think it’s relevant to mention how, in the story so far, no one ever discovers that the MC is a woman. It still feels that you’re playing as a woman disguised as a man, and that it is a fundamentally different experience from playing as a man.
TL:DR; I think this could work if you’re willing to put in the effort to have some different text and perhaps an extra scene here and there if the MC is female. (She doesn’t actually have to be discovered, but maybe a scene where she fears discovery or where it’s a near thing, to remind us of her situation).