Name

I have never heard any of them here in Sweden. 
Tamara is what I think of when I read Amara. 

Aria is (in my ears) not a real name, but if you like music, opera, you can always claim that is the reason for your choice of name 

Both are possible for Swedish people to pronounce, so that is not a problem, but I think more people than me, will first think they are not "proper" names.