No need to fit a 150 anyway.
I managed to get the pegs and the pannier (vario) to touch down with a 130. I will warn you that at that point it did run out of tyre, but it's a feckin long way over!!
Ok it was a 650 Dakar, but essentially the same chassis and tyre combo.
I found the Conti escapes to be the best tyre for hooning.