definately a good idea to repot into a bigger pot,
you cant tell the sex until it starts showing flowers, either pre flowers or real flowers once in 12/12.
and its ready for taking clones too, looks like plenty of cutting sites on it.
as for id, again, you will have to wait until its well into flowering to have any sort of idea, and then most of the time its still not possible to be definate, looks like an indica dominant hybrid of some sort IMO.
BM :bong1: