So far, I'm very pleased with how things are looking. The seat, when I sit on it, is very comfortable. The webbing is still a bit tight, but it'll get better and lower with use. The rear of my seat isn't as low as I wanted, but it's in a very comfortable spot. I think my original desire for it to be a few inches off the floor wouldn't be as good. The base is 4.5" high in front and 4" in back giving the seat a slight angle. Then, 3/4" plywood and 3" of foam on top of the webbing. As of now, when I sit on the seat, I lower about 2". So, all that has me sitting about 6" off the floor and it feels good. I have a little support under my thigh and I can extend my legs with a minimal bend. I built the bottom seat with 3" of space in front, so when my butt sinks into the foam and webbing, I get a little thigh support. The top of the back support barely touches the body edge. But that won't be the case, when the back is upholstered. My seat back angle is roughly 18-20 degrees, which feels good.
The bucket seats I had planned would have been a VERY tight fit. I may have been able to get them to work, but not as I originally planned. At 37" wide, my seat has good seating for two people. I didn't take the seat bottom all the way to the body sides because in my first T Bucket, that ended up being dead space. So, in this interior, the spaces on the side are little cavities for storage, if need be. I also have space behind the seat for storage, if I need it.
Under the seat, the 2 compartments have enough room for the fuse box and what ever else will fit. I'll probably have the fuse box under the drivers side. Since I'm going to use a drop down battery box, I won't have that hole under the passenger side. So, that space will be all for stuff like a small tool kit or whatever.