Hi I had the same dilemma and didn't want to spend any money, in the end having tried the go pro software and others I stuck with movie maker - keep at it and you will make it work for you and it is free!
Sony catalyst browse is what I use. Works well for cutting, editing and color correction while on the go. It's free. The P3 camera is Sony and the software makes it very easy to exploit the capabilities of the camera especially when shooting in Log; but it's easy in Normal color mode also