After a lot of deliberation I have made a decision to screw the front bun directly to the sole which allows me to achieve the design aspect I was looking for.
You will notice that the profile has been cut showing recesses for the handle tenons. Still a lot of work here as everything is complex just to achieve a simple line. The handle will be secured by one 6mm screw. All my dimensions are critical so precision is the key word. I am longing to get this bottom finished and get on with the rest of the plane. On all my planes the bottom is the mainstay of my work.