Serious Cosplay Question, I Need Your Help?

NYAF(New York Anime Fest) is coming up pretty soon. Originally I wanted to go Sosuke Aizen from Bleach but when I went to this other cosplay event I realized how crappily made my costume was. I wanted to make my own costume but my Roy Mustang(FMA) cosplay is going to take a while to make so now I have three choices and I need your help in making a decision.

1) I could get a blond wig, black turtleneck, and a fake gun and go as Riza Hawkeye(FMA) since the military pants are already made. However I don't think I would make a very good Riza cause' I don't look anything like her. The other thing is that her voice actor is going to be there and well...I would feel a bit awkward....I know it's sad she's my fave character on FMA but still....

2)I could get a black wig, a vest, and some buster browns and go as Selim Bradley/Pride(FMA) but I don't know about that ether. Is 5 foot 2 short enough to pass for a small boy?

3) I could just go as Aizen but seriously that costume was very poorly made.

I don't know what do you guys think?

p.s I would have posted pics of the characters and me just so you could see what I'm talking about but Y!A hasn't been letting me post anything with direct links