Cylinder wall thickness: what is too thin??

the rest of the cyls are over .100".

I would hate to get it all together and then crack a cyl or something.

btw it is stock stroke, but i was hoping to make some power with mild porting on the iron head, comp 268H cam, eagle forged crank and I-beam rods, keith black hyper-u pistons and somewhere around 9.5:1