I would actually advocate Balmung if it is believable. I transferred there a couple weeks ago and have had some of the best times on FFXIV there. The atmosphere is pretty friendly and there's always people looking to help on there. Not to mention if you're looking to join Free Companies, there's a good amount of them that tend to advertise in the PF. Found one that is part of a bigger network in FCs and there's usually someone online willing to help.

Though as a warning because I wouldn't feel good unless I mentioned this. Balmung does have a reputation for Role-players and they are most prominently found in the adventurer guilds from my experience. However they haven't impeded anything from what I've seen so they can be ignored if you so choose.

I hope you choose a world that you personally enjoy, and welcome to Final Fantasy XIV.