Just an FYI, but i'm not sure a Custom X is what you want for park/play...that's more of an all-mtn board designed to bomb away on steeps and really carve - it's pretty stiff. The Custom could certainly do what you're looking for but I wouldn't recommend the Custom X.
Even the Custom X is going to feel like a wet noodle for me! I'm the guy around here that likes snowboards to be long, stiff, and cambered. That includes in the park! Custom X has a longer sidecut radius for the same length boards vs other burtons, and being stiffer it wouldn't feel like a wet noodle to me if I bought a shorter board than normal. Custom X 152 or 156 would be fun!
Go for a Custom Flying V. You will NOT be disappointed. I pretty much ride a twinned out smaller version of that, and that thing can do anything you need, and it does come in twin if you need that. Does well in park and pow. The board just lets you go nuts, and tbh, you seem like the person who LOVES to go nuts.