The voltmeter that are for R/C use have the abilility to switch between 4 cell batteries and 5 cell batteries. They also check transmitter batteries. I reccomend the ones for R/C use.

I have the glow starter with the NiCD battery. I don't like having the wirers hanging near a spinning prop. I think NiCD ones are safer.

Get the prop balancer. You should always balance props. If you don't you will get vibration damage and something will fail in the air. Unbalanced props cause fuel foaming and that will cause the engine to quit.

I hope this helps you.