Have you try it at shop or with friend's and actually enjoy it? Get Slim version is adequate.
Party bundle is worth to buy during current sales now, with 2 bundled games and second controller, good way to start the hobby... but by all means, get the best setup you can buy if you willing/afford it though.

Btw, I'd warn you before jump ship that console gaming is very taxing on your free/past time, and since you mentioned you are new to this, there is an uncertainty whether you would pursue this hobby longer or end up just to turn it on a couple of times before collecting dust or trying to sell it off a week later with an overused reason "no time to play" (but also actually lost interest due to wrong choice of game), maybe?. Yup we've all seen this happened many times