Personally, I would buy a Starter Pack from a previous season too, use that for the cards, remove the binder cover cards and replace them with this season's binder cover cards.... but I hate side-opening pockets.
The sleeves from the pack we got was not wrinkly but the plastic is thin. The tabs are removable. They come in a separate sheet and you can then pop them out if you wish or not bother and just leave them in the sheet.