Controllerless Networks

Have a project where i have below:

Internet --> Firewall --> HP switch --> 3x 375 

Haver worked on Aruba before so need help:

1) What are best practices for IAPdeployement 

2) I am assuming i will configure Virtual Controller between 3 IAPs, Where should I be configuring DHCP VLAN Pool - I do not have separate DHCP server so i would be using IAP as DHCP server so question is woud the default gateway be the IAP or would it be the Firewall? my FW would normally be playing Default gateway for VLANs but not sure in terms of SSID (VLAN) attachment will the gateway be the IAP or FW VLAN ip

Any suggestions :)

You can configure your DHCP server to provide DHCP services, also use your FW as the default gateway. ensure the IAPs are on their own mgmt VLAN, generally this would be a native VLAN and the wireless users would be on a tagged VLAN.

Thank you thank you could get it worked