Hull type, size, weight, and what prop are VERY important factors when determining what setup will work. You could have everything right except the prop and bang...there goes the motor or ESC whichever is more expensive[:@]. Also you could have all the right equipment in the wrong boat. What I mean is the setup that will be perfect for a hydro won't be in a mono and vice versa. I'm no expert on this FE stuff but, I have learned alot from RCU and the people here that share info so I will help as much as I can. Research some other brushless setups in similar size monos and that should give you an idea on what props you can use.

So is your motor a 540 size 9L?