question for family class other relatives

i would gladly accept your comments/ advice/ etc. thank you!

i am being sponsored by my aunt. sent my application requirements last jan 2011, then december 2011 i got my medicals request. i will do the medicals this jan 2012.

what do you think are the chance of being granted? since i am already on the medical exam stage, what are my chances of being approved? do you think there is a big chance?

and the interview, is it already waived?

i am not sure of the stages for family class other relatives. most cases that i see here are for spouses.

please let me know some guidelines, ideas, comments, anything, about the chances of approval for family class other relatives.

how long usually does this take before the final decision?

thank you very much for your thoughts!