you'll be good on the 158.
Out of curiosity, why all Burton.
And I really liked the ICS when I demoed it. Many will say it feels dead where the inserts are, but I just felt like they gave the board even flex thoughout the entire length of the board. Instead of soft-stiff-soft-stiff-soft, it was mid all the way down. I may make the jump next year, ICS/EST is amazing in the park. Just cause you can feel EVERYTHING as it goes under you, without the downside of chatter. It really feel more connected, like skateboarding. I only wish Cartels didn't have lame-o forward lean.
Go ahead, drink that kool-aid.
FS: Forum Sauce 142 $200 plus shipping
FS: Flux SE30 $75 plus shipping