I run an FX61 on mine and have tried a few props and I get the best all around performance from an 11x7. I fly from grass and we can typically see the grass flying when I rotate but I've never had an issue with it. I do have it in my mind I'd like to try a 10x10 but haven't found one yet.

Knowing how mine flies I wouldn't even think about any less motor but might consider more.

I have a few edf's around and I'm sure there are others that will be far more in tune with this but I'm thinking there is no way a 46df is going to fly this thing. DF's are cool but when the ponies count it's usually a bad road to travel. IMHO that is....