Prop size?
 

Prop size
Hi all, was hoping to find the info I need but I feel like you need to be a rocket scientist to understand all these charts. Maybe somebody can help me.
I have a new build not sure what size prop I should put on it. It weighs about 600 g approximate 3 foot wingspan a 2204-1800 kvolt motor with a 30 amp ESC. Started with a six but not sure if that is correct. Don’t know if I should go larger or smaller. Any help greatly appreciated. Save me a little time, thanks