oh shit one more question what about the seat post?judging by the pic of the bike i want i doubt i can ride while sitting on the seat.so im gonna need a longer seat post.im 5 9 so whats the length i can ride comfortably and not look like an asshole too?

you should be able to ask your two feet on the ground that is the size of security.
people who make the "street" fall up the saddle for more freedom of movement.

What is the name of the bike and the reference?
to know the size of the seat tube