So I have a 3d human model that I made in blender and it has almost 14,000 vertices, almost 14,000 faces, and tris are almost 28 thousand. Will it be okay for me to use the model for game play elements in unreal engine? Whats the maximum amount of vertices that a character can have in order for a game to run smoothly in unreal?
It depends on your target platform and your game.
Check this topic: link text
that thread is actually somewhat poor imho.
http://polycount.com/discussion/141061/polycounts-in-next-gen-games-thread this is a better indication.