I think the iS101 is too close. I'm your weight and even though the S101 is a very controllable board that is surprisingly easy to ride in chop it still sums up as a light wind kind of board. If I had a 111, I would rather pair it with a iS86 (or possibly 94). The 86 is still very effective with something like a 6.6 but feels like a much smaller and more natural board with a powered up 6.0.
But maybe the 86 is to close to the CA58 you are getting rid of? If so, it would help to know why you are selling the 58?