How would you expect the wheels to be assembled? I haven't seen what Jeff's done with the heavier tanks, but at least with the Tiger II they were complete units instead of separate pieces. Ah ...because, well, those interleaved road wheels are always such a joy to put together.
Looking at those renders its curious just how simple the exterior construction of that vehicle was. Just loads of flat plates. I suppose the interior was more complex, but I'd imagine that once you worked out the detailed areas and weird angles the rest fell into place.
With a turret that size how large is the plug going to be? Most of the weight looks like it'll be in the turret at least, so there's not much risk of it toppling over.