Oh another thought on these red and green LED's... The actual LED's will be each on about 1.2 meters of 22 AWG wire, which means in series from + to - there is a travel of about 4.8 meters of 22AWG wire, I wonder what that does to resistance and capacitance, and if it is enough to merit bumping up the total constant current sink to overcome the loss, plus it will all be on PWM so technically it should be able to be a bit higher because of that too, any thoughts?