Howdy All!
I love that herb garden idea! We will be living off the fish we catch and large bag of rice, so some fresh herbs would be great. I can see foreign border officials being a bit pissy about bringing plants in. This isn't to say that while we have our castle we won't be growing ourselves a going away present.

Wife and I have almost finished our simulation box. It measures: 40"L x 36"H x 24"D
I will post some pics of it here soon.

What I am having the most trouble with is the CCS PWM circuits for so many LEDs. I have decided to go with a 24v system (still chargable with wind and solar), will be able to get 6 LEDs per CCS (Constant current source).
CCS: duel transistor looping; burning a max of 1.67w in heat
-any ideas on a better method for efficiency?

So we have CCS then LED bank then a N-Chan. MOSFET with gate being controlled by a pinout on the TI MSP430. (Just bought a few of these things and they are amazing little chips!) This config would require 8 sets of CCS circuits and 8 MOSFETs, 8 pinouts on the MSP (since each color will be controlled uniquely, hours in a day wise) for PWM and light cycles.

Other idea is to forget the CCSs and throw a 0.1ohm resistor after the LED bank but before the MOSFET with a A/D sensor, from the MSP, before and after the resistor in order to measure the drop in the MCU and use that data to control when the MOSFET gate is open or closed via software. This would take 3 MSP chips and a common EEPROM to run the whole setup, which is more of a pain put could also have really good future scalability.

Any other ideas of driving these LEDs??
Anyone with experience with these LEDs, or similar, know what a good voltage is to drive each LED at 3a??? Is that even smart, given the datasheet specs 1500ma max pulse current.
All but the reds have a max of 4.95v or 4.47, reds are 3.6v

I will post a scan of the circuit diagram when I finally pick one.

Thanks everyone!!!