For Hair------->> You can use Nair, or any product that works like Nair does (dissolving the hairs) leaving your skin smooth and the hair doesn't grow back as thick, as fast, or as dark. I use Nair when I need to get rid of any hair that is ANNOYING or if I want to wear a really slinky black number and only smooth, light skin balances with a good dress.
You can get the hair on your face and your neck threaded, however, I don't recommend your neck but your face DEFINITELY. Threading leaves the hair lighter, comes out slower, and also not as thick as shaving but since you're a guy and you've been shaving the hair is probably REALLY thick already but it doesn't hurt to try. Call beauty salons and find out who does it.
About your body sweat....switch deodorants, follow the directions on them, find out if there's anything you're eating that's causing it or any lifestyle choices that are affecting it? Otherwise, you might need to start a schedule of showering the night before, putting deodorant on that's organic from Trader Joe's or Whole Foods stores during the night then in the morning use some lemon and ice water to close the pores of your pit and clean out any bacteria then reapply a stronger deodorant and then flush your whole body with cologne...??
hope you find out and if not don't worry too much, you're beautiful anyhow!