Go to: Display > Heads Up Display > Poly Count
Poly count depends on if your doin it for game or film. For games I always see companies on monster.com, gamasutra, etc asking for under 8,000. (8,00o is alot for most game engines) Check out www.polycount.com. for more info.
I dont know of any way to check for non quad faces besides eyeballin it. A few triangles shouldnt effect smoothing very much.
Hope this helps
-darrell