Hi - Currently we have a Zone Director ZD3000 and about 25 older Zone Flex access points (ZF7962) the ZD is using version 9.3.4.0 build 15. We are currently looking to add a few outdoor access points but want to see if I'm able to add different models with different software/firmware versions. We are looking to cover areas of about 400 feet or so. If anyone has any suggestions on models that will work, I'd really appreciate it.