Fantastic build, a real showcase for your considerable skills. Your scaffolding looks accurate to me, consistent with published images. It looks an extremely good reproduction of the original model.
That's all that matters, but for anyone that is obsessed......
Generally the Space Station is described as "1000 foot diameter" so the "busy" planes, as zorg said, don't seem to have human sized gaps, but that's how they were.
The interior set is usually reported as an arc 30 feet by 150 feet based on a circumference (at floor level) of 3000 feet projecting a diameter of 955 feet ."2001:The Lost Science" places the Hotels on the Inner Rim . Since a 1000 foot external diameter would give a circumference of 3141 feet, the interior set broadly supports the 1000 foot diameter Space Station sizing.
However, there are many who argue that the physics of artificial gravity and the comparative size of the Orion and Aries dictate a Space Station of upto 3000 foot diameter is required. Ian "Stargazer" Walsh finally estimates 1836 foot diameter. Obviously, with a much bigger Space Station the gaps in the scaffolding become big enough for humans...but not neccesarily consistent with the interior set !
I believe that the models of the (whole) Space Station, Orion and Aries were all filmed seperately, never any two together. Kubrick manipulated images, not models, to create the shots. I read somewhere that for the Blue Danube sequence the Orion was shrunk until Kubrick felt the shot looked right, effectively increasing the Space Station's size.