Hire an architect to do the specification ($40k for 2 months), and one board designer ($120k as contractor for 6 months) and two layout engineers ($36k total) to implement the design. For redesign, use a contractor at $75 per hour (budget $4k). This is for top-quality Valley talent. If you do this overseas, costs will be 1/3 but you will need more redesign. $10k for software tool licenses $50k for prototype PCBs