The user VLAN can be mapped to different local only subnets in EACH building. We won't care about that. So vlans 1,2,3,4,5 correfspond to subnets a,b,c,d,e in building 1 and in building 2 vlans 1,2,3,4,5 correspond to subnets f,g,h,i,j.
For management, the VLAN 10 should be the native for ease of deployment in BOTH buildings and VLAN 10 be trunked/tagged between switches and these 2 buildings.
In the SSID, VLANs 1-5 can be assigned to the VLANs. NOT default but a static VLAN(s).
The default setting will place users on the mgmt vlan 10 which is not what you want