I don't see any problem with earrings on a dude. I used to have 8... 3 in the right, 5 in the left. When I went full-time, I cut it down to just the ones in the left, and when I had to remove my earrings for work, I ended up letting them all but close... all but the one in my left ear lobe. I have a 12-gauge in that one now, and I never take it out. No one's ever said anything, and it's pretty common for dudes to have one earring... heck, in Colorado, where I'm living right now, it's actually more typical for guys to have both ears pierced, whether they're gauged or not.
BTW... 8 or 6 is not really a "small" gauge. That would be sufficiently masculine, in my opinion. In the end, though, it's more how you act than how you look that determines how people will read your gender.
SD