You picked my favourite resort! You'll love the Poly. The pools, the restaurants, the ambiance. the bar.
As for helping you choose which option to go for, I would definitely stick with a standard room. The rooms are much bigger than a studio. Even though I loved the decor and the extra shower in the studio, opening up that pull out couch each day was a pain and the mattress on that bed was kinda small for the kids. The room felt tight once that couch was open.
As for Club Level, I never went that route so that is your decision!
Hope that helped!