I'm a bit surprised at the DHCP question. Your IT staffer should go with what they want. Hard assigning IP is in my opinion old school and tends to demand a lot of support. DHCP makes it a bit easier but as the movie line goes "there can only be one." That much has not changed.
As to a WDS system, I never used such a thing. I have connect WAPs and routers configured as WAPs to the LAN and let them auto select the WiFi channel. The only new thing I setting is to set the channel width down to 150Mbps to allow more WAPs in the area.
i have been struggling with setting up a WDS wireless network using 5 AP's for my office.
im using Dlink DAP1353 AP's and they support WDS but its a mission. The LAN infrastructure is there already but do i connect all devices to the LAN or just one?
Do i use the DHCP server or do i let one access point handle that? i keep getting signal conflicts and a lot of don time.