Hey Nate,
I'm a singing drummer also, and I've been thru the gamut of mikes, stands, booms, etc., etc., etc...... I eventually came back to a headset mic. Forget how it looks--go for ease and sound. My headset mic is pretty slim, and was frankensteined together by a pro friend of mine--I'll take a pic when I get a chance. It works GREAT, and is light as a feather. It also has a volume control on the box (belt clip mounted) so I can adjust my volume, not someone else.
As far as the mic picking up breathing noise, (I call that Huffing" or "Darth Vader syndrome!) all I had to do was position the mic head on the SIDE of my mouth, (away from being directly under my big nose!) and about 1/4" away from touching my face, and bent into a "P", so the mic faces my mouth. I also put TWO small foam covers over the mic, which also helps a lot.
I don't know about you, but constantly leaning into or away from a mic on a stand or boom was very tiring to me, and subtracted from my drumming. The least tiresome version of that was a long boom behind me with a 2' gooseneck in a "U" overhead. Even then, it got old, as I sometimes whip my head around when I really get into a tune. I think most mics (uni or not) will still pick up drum sounds, especially cymbal crashes. Headset mics seem (at least to me) to limit that the most. BTW, my mic is wired, not wireless--I had some sound problems (buzz, etc) with the wireless one I owned, and sold it.
Good luck,
C. P.