Looks pretty cool - though mixing Stanford Toruses and O'Neill Cylinders is logically unlikely (especially since they have the same radius!). Better to say that the central cylinder either contains the mirrors that direct light into the toruses or something like that, or administrative stuff (with no gravity). Centrifugal gravity is directly proportionate to radius, so at the 1-mile radius of a Stanford Torus or an O'Neill Cylinder, a few stories up or down doesn't make much difference - but wrapping a torus around a cylinder and spinning them both for gravity would be awkward (unless you were deliberately trying to evoke the effect). One of the little side notes they had for Babylon 5 was that Down Below - the decks below (outside) the main habitable decks weren't deliberately used because they had a higher level of gravity. (B5 was much, much less than 1 mile in diameter.)

I haven't played with Google Sketchup for more than about 90 seconds, so forgive me if this isn't possible - but you might be able to get a more dynamic look by moving the toroids out of alignment - figure that they'll be made up of two counter-rotating pairs (it makes the whole thing easier to point at the sun).