I am pre-op mtf ts, interested in women, how can I let a girl know?

So . . .Im 23, have been living full-time for 8 months now, and I didn't put up much hope for dating til I had surgery. Im not into guys I didnt feel like like i had many options . . . I have been having girls hit on me and I am interested, but I don't seem to be having much luck with disclosure. I do not want to tell some one like right away only to have them leave. Yes i mean literally just walk away! I don't want to complain, but I do complain! lol. . .so basically I'm going to be able to have surgery next summer and I really have just been thinking that I wont even try to date til then. It shouldn't even matter at that point anyway, right? that is kinda f-d up and self-nullifying but I really cannot stand being hit on and then have her turn up her nose and seem embared over hitting on the "" something I can't do anything about. idk how this whole disclosure thing should work. next time I could just have a more laissez faire attitude,"what the @(#$ is that!", "oh yeah! that's right, that, don't worry bout that. it's no biggie."-----zing! what do you think? too laissez faire?