If you need a CD unit, this is the best deal I found. $93 shipped with the CDI unit already set up for the 1/4-32 plug, Hall sensor assembly, switch and spark plug.

http://www.syssaaircraft.com/gas_engine_ignitions.html

I installed it on a Saito 100 and couldn't be happier. Unless you're going to change the carb I'd stay with methanol....carbs designed for glow fuel don't meter gas very well.

The good thing is that you don't really need nitro and can get by with 6-7% oil. You can buy a few gallons of methanol and use it to dilute commercial glow fuel until you get the ratio you want. If you have dragstrip in your area you can probably get some there. If you just want to try a little the gas line antifreeze "Heet" and the generic equivalents thereof are methanol.

Rick