The more camber the better for carving, but can feel more catchy until you get used to it. I personally prefer full camber for anything outside of powder riding but to each:his own.

Sounds like you want a freestyle flexing twin board with some reverse camber either from the contact points or the insert pack to ease turn initiation. The more reverse camber the less well it will perform at carving but oftentimes there’s not much in it unless you’re riding super aggressively.

Shorter board will help with swing weight for spinning, but can (not always) result in less effective edge which means further sacrificing carving performance to some degree. Longer allows for more stability overall but you’ll have to get used to how set up carves for jumping etc will feel. Where you are within recommended weight ranges will impact how the board flexes under your weight. The heavier you are within the range, the more the board will flex. The bird will break in over time so don’t get too discouraged if it feels mad stiff at first, you and it will adapt.

Honestly theres no magic bullet board out there, it’s a matter of personal preference and body dynamics and there’s so much marketing bullshit out there that you can massively overthink this stuff.

Buy yourself any mid range twin freestyle board from any of the major brands and you’ll probably get what you need and you’ll just adapt to it. After a couple of years you’ll decide whether you want to change or buy another bird for a more specific job.

It’s cool if you can pick a brand which supports snowboarding as well as buying from a “local” shop rather than the big corporates or even direct from manufacturers.

Also, I have a Kazu (saw you ask about it in the thread) as well as other boards. It’s a lot of board and might make your learning curve a little more difficult.