Agreed on the math (a long time since EE). Just looking for an alternative to the SMT resistor pack by putting one standard resistor possibly using existing circut board holes (which should be easier than SMT by soldering on the back side like the LEDs go in) and connect on the other side feeding the LEDs. Is the voltage on the "left" side 5V or 12V?

Sorry, never thought to look in the BBS FAQ. If all else fails, read the directions.