I'm just back from my training course. I have started designing the power section from the DAC end. the first board will go from the DACs to an analog control voltage for the power stage. The board after that will be a pwm amplifer (30V, 5A, 2 phase, 250Khz, gain of about 6)

Last night I piggybacked some DACs onto some DIP8s that seem to have had a hole drilled thru them right where their die was. having the DACs as DIP8s will make my life easier for now.