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Hey everyone! I want to upgrade my current quad as it is very stock right now but I need some advice. First here is a picture of my FlameWheel F450. It is the first quad I've ever built which is why it has a lot of stock parts. (I wanted to make sure I could get it flying before trying anything else) As you can see I have the standard DJI plastic props on it. I would like to move to carbon fiber but don't know exactly what to get. I see the name Graupner everywhere and have looked into their e-props. Does anyone have experience with them or prefer some other props over them? I also want to start using some 4S batteries. I currently use two 3S batteries, one at 4000mAh and another at 5000mAh. They give me great flight times but even in atti mode I don't get as much speed as I would like (this is with the pitch gain set to 400%). I have read that you can only use a 4S battery with 8" props on the F450 otherwise the motors will burn up. I've also read on some other forums that some people have had success with a 4S 10" prop setup. So, will moving down to 8" props with a 4S battery give me more power? One last question. I also want to upgrade from a 2.4 GHz setup to a 5.8 GHz setup. This should obviously give me a longer range with the quad (I've flown out of range with my 2.4 setup but luckily the NAZA-M V2 brought it back within range). Does anyone have any recommendations for a 5.8 GHz setup? Thanks.