It also kind of depends on where you're staying. If you'll be in Playa den Bossa, then you'll have an hour or two more time after hotel check-in than if you're staying further away.
Also, if you buy your tickets online, you'll probably be able to avoid the long queue by using the VIP entrance.
It does depend, however, on how willing you are to pay the full entrance fee for a shortened We Love experience. Nevertheless, you'd still get in at least 6 hours which is about what you'd get at any other party you'll attend (assuming you normally arrive at 1 and the event is over at 7)