You look like a girl and you have decided to also change your genitals according to that, and now you wonder on a forum full of guys looking for shemales guys (as in all guys) will be attracted by you?
Pre-Op you will be a cute girl, do boys like cute girls - the answer is yes. No worries. Will this place be the best place for you to find guys on? Perhaps not, but on the other side there are forums for BBW and their lovers for young guys looking for cougars and so on.
Just go out on a normal club, be cute and make the boys a bit nervous!