Last play is fine.. anytime you're a 75:25 favorite you gotta be happy.. of course along with skill, to win a big tournament it takes a little luck and a little avoidance of luck..

First play you could bet less.. losing the minimum is sometimes as important as winning the maximum.. even 2,500 bet is enough to get information, and nobody would be chasing any draws since there aren't any.. so if they call or raise you know they have 1st or 2nd pair.