Front Hub - Modify or Build New?

My first approach to making the hub wide enough was to modify it. It needed to grow in width and the number of spoke holes needed to increase. The width has to increase by 2-4 inches (50-100mm). I envisioned parting the existing hub and using a tube to stretch it. The tube was to be welded to the hub pieces. The spoke holes required a different type of added part, the spoke ring donut. After machining the existing old flange down below the spoke holes, a new flange ring would be welded along the perimeter. The rendering below shows original hub pieces (gray) and the new pieces (red).  

I'm sure this would work, but a local machinist suggested that I would do better to make a new hub from scratch.