It only took a couple of years (start here) but worth the wait I think 🙂
Someone asked what did I do to the drawers to accomodate the plumbing. In one of the pictures on the previous page you can see where I had drawn pencil lines in the top drawers to fit in the basin. I ended up nailing the face of the two smaller top drawers in place. For the middle drawer I did the following. It accomodates the trap and still makes use of most of the drawer for storage.
I used a scrap piece of bendable plywood to make that U-shape piece of wood.