I think a bit of both. T2 is perhaps on the slightly larger side of average and Rango a little on the smaller side. I had to do that, to get the thing in weight. Happily the wheelbase is only a little smaller than T2's so despite its small size, Rango should be fairly stable.

I have just half-checked belt distances for the drive and I think it's going to be just right. That's a pretty big worry mostly lifted. Of course only having the complete drive setup bolted in will present any problems, if there are any.