I have the same issue - what is wrong with "Kit kint vársz"? Both the accusative and the location seem more "important" than the verb in that sentence, and some of the other practise sentences have the location before the verb.
Yes but still it is a natural sentence. I can imagine it in situation when I'm a bit surprised seeing you outside. Especially with little emphasizer words: "Te meg kit vársz kint?" "Hát te kit vársz kint?"