Thanks for the comments. I do plan to back up the blade bracket to keep it from flexing in high winds.
I will keep in mind what y'all have posted. But I want to try it I have too much time in these to not try them. I am prepared to change blades if it does not work out.
I need to figure out what the stall is that you are talking about. I have read something about it but I cant remember what it is. I think it is they will hit a top speed lower than desired to produce max power?

Thanks,