Recommended WiFi Card for Software Appliance?

There doesn't appear to be any threads that address recommended WiFi cards for a UTM Software Appliance 
^{(this was the closest I found and it was for a HA)}.

• Does the UTM SA contain drivers for a wide array of cards, only specific ones, none at all, etc.?
  • Since I'm running UTM within an ESXi VM, is this more applicable to ESXi and not Sophos?
    (i.e would the WiFi card simply be passed to UTM as a VMXNET3 interface)

 Are there any considerations I should have prior to exposing my UTM to WiFi?

• I've always been hesitant to expose UTM to WiFi, but due to my network environment, and the inability to get a vLAN properly configured between OpenWrt running on a smart switch and the UTM, this seems to be a more practical solution.
  
  
• There will only be two devices running off the UTM WiFi, each on their own vLAN, with all other WiFi devices running off OpenWrt's WiFi networks. 
  • These two wireless devices will be firewalled from all other networks, including LAN, with the WiFi vLANs soley providing internet access to these two specific devices.