Your name is your name, man. I think that Mikey-kun5 will give you a -slightly- more masculine feel, as 'chan' is very feminine (and I think males are only called it teasingly/when being addressed as a lover).
As for your avatar, I gotta say I really like the one you have right now. I'd stay with that one, I think it's more unique and has more personality. And overall, it just looks simpler, cleaner and better (in my humble opinion).
You seem really concerned about the name issue, though. I've seen you ask around a lot. Name changes aren't permanent, though they do start to cost money after a while. All I say is that if you're gonna change, it change it, and if you wanna keep it the way it is, than just do that. What's in a name, anyways?
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