ok, sounds like you are a machine at this sort of thing, go for it.
I also Only ride trails and with my setup, im 16mm wider than a stock YFZ450!
it took some getting used to and I clipped a few rocks and trees when i started with it but your eye soon adjusts as to what you can fit between and you will adapt to the new dimensions. do them where you want, dont worry about going too wide unless its stupidly wide. you will adapt.
width trumps an unstable narrow bike anyday