I need some help picking a prop for tomarrow morning. I Just hooked a Thunder Tiger .91 4-stroke on my Big Stick .60 (for a test bed). I bench ran the engine on my test stand with a 15x6(what the manual called for) and it seemed to run great. Problem is that prop pretty much scrapes the ground when mounted on the big stick. I have a couple other props to pick from,but not a 14x7 that I'd like to have. A 14" prop will give me about a tad over an inch ground clearance which I think should be enough for now. I'm definely flying this thing tomarrow morning so I wont be able to make it to any hobby shops. I have a 14x8 and a 14x6. I also have a 13x6 and a 12x8,but they just dont seem big enough.

The stick had a .90 super tigre swinging the 12x8 and flew awesome. So,I want to go with the 14" props,but I'm just not sure If I should go with the bigger one or the smaller one. This is my first .91 sized for stroke,and I'm just not sure which sizes it will like.

Which one!?