Using 2x4 for wall studs and framing has got to make that thing unbelievably heavy. It also seems a shame to go to all that work, but leave the original bus windows. Not only does it look tacky, but it can't provide much insulation. I would bet it is also noisy going down the road.
I hate to say it but I wasn't that impressed. Don't get me wrong... It's better than what I could probably do myself. Maybe there should be more pictures showing where the wardrobe is and the bathroom etc...
The flooring is very nice but I wouldn't call the dinette area beautiful from the picture...
I've seen some very well-upfitted skoolies (school bus conversions.) The only downside of those is because they are not RVIA certified, it is difficult to find a private campground that will take them, and insurance can be daunting as well, since they are insured as an old bus worth a couple grand, not a second home.