Ideally strip off the QD before you wax the car just so the wax has a longer lifespan.
If you do go the ceramic coating route, I'd recommend giving a spray on, wash off maintenance spray (such as Gyeon WetCoat) a go first as you'll probably find it does everything you want and more than a wax, as well as is much more time efficient only adding 5 minutes onto your normal car wash routine.
If you do wax over the ceramic be aware it can dull the performance of the ceramic coating.