Thanks guys, glad you liked the vid, and yes Graham, I will be using those motors from now on!
Eddie, appreciate the compliment! Now you know what you have to do! lol! It lands faster but if you stay ahead of the plane it is just as easy, I just relax and concentrate and the plane will be just as honest with you at the higher weight. If you like to use lots of elevator and forget you have a throttle then you will be in trouble for sure. The stock plane will let you get away with murder practically, but at the higher weight you have to get the nose up on final and get on the throttle to bring it in.
I use one 5s 40C 5000mAh pack pushed back near the C of G and one 3s 40C 5000mAh pack sitting in front of that. No modifications and the C of G is almost right on the money, might be a hair nose heavy, but for me it's fine for now. I've been running the Hobbypartz Sky Lipo for a while now and I really like them. http://www.hobbypartz.com/77p-sl5000-5s1p-40c-5555.html