It doesn't sound like you need a wide board so, I don't reccomend getting the custom wide. I have an 08 custom and I think it's good for all mountain boarding (including park). I don't really like the feel of it for freeriding though. My old board was a Burton Supermodel and that thing rode like a bat out of hell! If you have any demo days around your local mountain, go check them out. Personally if I was in your shoes, I'd go for a T6 (159 or 162) or a Supermodel (159 or 163). I'm a burton lover and can't say much for the other boards because once I went to burton, I haven't gone back.
Really? The custom was beastly for free-riding for me. Love the customs.