You won't damage the amp, the extra strain is hardly worth mentioning.
As for removing the panels, even on the F11 I hear the back is a doddle.
As for the front, if you follow the examples its easy enough, I wouldn't pay someone. I too ordered a removing tool from e bay for a fiver, but the speakers turned up before the tool. Having no patience what so ever, I removed the front panels and changed them over without the tools. And didn't break anything. But the tools would have helped..
