This seems very smart
Given many here are over six feet, lets face it, you WILL be read, as girls can be tall but we're usually not THAT tall. We also don't have Adam's Apples or large hands or feet. (Well, some might but I think these girls are rather rare going by the shoe sizes always left in stores, lol) Anyway, these are also natural giveaways that you can't exactly change by wearing makeup.
My gut feeling (and reading the answers in a thread I started a few pages ago) accepting you're a man crossdressing in public is surely healthier for your mental state than heading out with the hope you'll be seen as a woman. Unless you're transexual, I don't see the point in setting yourself up for such disappointment?
And for those called 'Sir' when dressed, the general public has no clue what a CD is doing or thinking so I doubt they are being disrespectful - they're just calling it as they see it. You can't blame them for their confusion. From what I read on this forum, most here are equally confused, if not more so!