It might not have a sight glass, but a small dipstick on the lower right side, My 00 R6 did, dont remember when they changed it to a sight glass.
It does sound like the carbs could use some work, If it did sit too long they definatley should be gone thru, Not too big of a deal to do. I would do plugs as well since they will be right there while your doing the carbs.
As far as the front brakes go, I have no idea either unles one or more of the brake cylinders where sticking and worked free or something, but whatever it is I would definatley have that check out thoughly before I rode it too much.
Like it was said before, Apts are the worst for bike theft, If you cant roll it inside or get a garage you are just going to have to take your chances leaving it out. Chaining it to a pole will help as will a rotor lock also, but if they want it bad enough its going to get stolen either way.