Um, nothing wrong with buying something you like the look of! Just don't compromise elsewhere to do it.
For the riding you describe Proto or SL do seem like the best choices.
The heritage is going to be quite stiff if you're in the park 25% of the time. The Cobra is(I think) not quite as stiff as the Heritage but has some directional shaping which gives it more forwards float in pow at the slight expense of switch capability.
What's you're reason for needing the 'carbonium'? On this years proto is just looks like carbon weave embossed plastic. Might save a tiny bit of weight, other than that you wouldn't miss it.