Unfortunately, the deluxe rooms at WL do not come with concierge service but you may be able to add it at check-in (there's no guarantee you would be able to do this.) These rooms do sleep 6.
I'd do the 1br suite at AKL. If you book for 6 people they will give you a 1br suite with 2 queens in the bedroom and a sleeper sofa in the parlor. Sometimes 1 suite is cheaper than getting 2 concierge rooms. You can always ask if an upgrade to a 2br suite is available upon check-in (there may be an additional charge.)
You could get 2 concierge rooms at WL. This would give you concierge service and beds for 8 people if you had 2 rooms with 2 queens a peice.
IMO, I would do the 1br suite at AKL. You get a nice suite, plenty of sleeping space for your party and concierge service. Also, some of the suites are on lower floors so you end up with a great view of the animals.