Just curious, are there other people in the apartment building, or is it just occupied by you? I think what Mr. tony was getting at is the fact that numbers on paper are one thing, but having a 5-6k grow in an apartment is kind of crazy!
If you have an appropriate number of watts/square foot, your ventilation/cooling is adequate, & you know the owner of the apartment then you shouldn't have any problems, but if you do can you break this set-up down in a timely manner? What about others in the building? If there are indeed other folks around, it sounds like an awfully large grow for someone who values their freedom!
I'm sure you know what you're doing, just be careful!