Jana as a male wouldn't have had a very different childhood, still growing up in the Shroud while learning how to hunt, trap, and skin. I imagine adolescence would have been very difficult for... Dina'a with keeper male naming, I guess. Whether he liked men or women, growing up in isolation would lead to him likely having eyes for the first mysterious outsider he sees.
As for young adulthood, I think male!Jana would have still made the trip to Ul'dah and begin life as an adventurer (perhaps even more likely since male keepers are supposed to be solitary).