Question about character backstory and organization

[Mazikol]

Hey there! I'm new to both the server and the forums and I have a question about certain aspects of my characters history. He is a traveling fighter (eventually to become a weapons master, katana), and I was wondering if I'm allowed to roleplay his membership in a group of "Wanderers" who travel the land to help people. Their "home" (or base/ place of worship/etc.) would be in a far off land, and I'm also curious as to how far I am allowed to roleplay that. Am I allowed to make up a small (very small) country (Think Vatican City, a country just to house the organizations town/castle/, to keep it free from political strife) or perhaps I should go with a small town or something like that.

The reason I ask is because I'm not sure what the stance is on organizations or new lands here, and his membership in this group is a large part of the backstory I have created (in my head, at least) for this character, as well as the reason he acts as he does.

Thanks in advance!

EDIT: I also have a question in regards to a fighter in light armour, or even just clothes. Is there any way to wear just plain robes and not get killed regularly? Perhaps some way to compensate for lack of armour? (I.E. Any other classes I can take as well, that kind of thing)