Canobi:
Thanks for all the tips and help your giving us @JakeSoftOne thing I need some clarification on is pin output voltages.
If an arduino is running at 5v, does it output 5v to its pins (assuming they're set to output).
I'd like to run the flicker LED from pin 5 so will need to add a resistor for it if it does.
No problem. I just hope I get to see some YouTube videos of all of your creations. I'll consider that a fine reward. 
I'm not sure how you're planning to run it, but if you're doing the standard Luxeon/Cree high-powered LED route, you won't power that directly from an Arduino pin anyway. Not enough current will be available to drive the LED. You'll need a MOSFET or a PEX from TCSS.