Well, I will make suggestions and give what aid I can regardless of nation.
But you should probably go for whichever nation looks most fun to you, and then find a group in that.
If that brings you to Dawn, you’d be welcome to join. Happy to have new people, of whatever age or experience! I’m also familiar with the rules you’d be using, as my first character was a battlefield healer/apothecary.
[Bribery: Join my group and I’ll lend you some phys-reps for the first event or two :p]
My House in Dawn is House Dromond, and we’re on this thread for further details (posted March 27th):
And as mentioned, the Wintermark Facebook group:
Additionally: If you haven’t booked for the next event yet, I (and other players) can also supply a discount code for a cheaper first event. On request, wherever you end up.