158 will be fine for you. I'm a little heavier than you and have a 164, but I could've gone with the 158. The new addition of the 161 is probably the perfect solution for me, but I have no complaints about my 164.
The Charlie Slasher has huge setback, massive taper, and that big old soft rockered nose keeps you floating no matter what. You'll be fine with a 158.
"People say that marijuana smoking is going to get in the way of my career. I say to them that on the contrary, my fighting career is getting in the way of my marijuana smoking." -Nick Diaz