In general it is not a good idea to tag your management interface. On the ZD it might be fine, but not a good idea on the AP, if you want to add more APs or if you have to factory default an AP of replace an AP, you have to have an untagged or "provisioning" port that will allow the AP to make an initial connection so it will know to use the AP management VLAN after the AP is provisioned on the ZD.
If you remember to always use the "provisioning" port or change the APs port to untagged during initial connection and change it back after the AP has pulled it's configuration from the ZD, it should work.
Either way will work, you just have to remember the management vlan when adding/replacing/factory defaulting an AP.
I have only had one customer who, after hearing this, was fine with tagging the AP management interface, but most opt to leave it untagged.