Poz means HIV positive.
To Auspoz: I would say the biggest hurdle is prob your status. But even that is not insurmountable. As more people educate themselves on HIV the stigma should lessen. Of course you will need to contend with what you want and their comfort level. Intellectually knowing there is no reported cases of HIV transmission through oral alone may not be enough for someone to blow you to completion with out a condom, or pulling out, for example, though others will happily do so.
As for hung only liking hung? Nah. My guy is hung and he loves my average cock. We are both vers, for what it is worth.
Body type? Listen, there is something for everyone. I am heavier and found a dude who is into heavier people. Actually, he prefers heavier, but likes people, which is important as I am trying to lose weight and it would suck if I lost him due to that! lol he has assured me he will find me sexy no matter what
Not destined for love? Meh. Who is? My situation is far from perfect. It works for me. We are in love. The question being, for us, is does that trump all that is not going for us (distance, work, his being in the closet)
I am neg, so I don't have first hand experience with the discrimination you face. But my uncle is Poz and I have seen what he went through. He found his partner though and they have been together....12, 14 years? Over a decade, that is for certain. Don't count yourself out