This being a veneer constructed cabinet, one of the first things to do is get substrates together. Here I'm laminating a few thinner sheets of plywood to make a thicker plywood. Sometimes I do this so that I can add an extra sheet or two of veneer to achieve a thickness I can't readily get or to just better control my materials and make a flatter sheet of ply than I often see stock.
The legs perhaps look a bit fat, even though a little will get cut away I may slim them down a hair. I actually have extra legs this time! So I can do a pretty exact mock-up with those.
I'm also a bit torn between open legs and adding lower stretchers. I think I'm going to have to get the frame and panel doors represented to better feel/see the kind of weights going on and to see how "line-y" it all gets.