Tell us about yourself!
MAC filtering and turning off SSID will deture uninvited attention. WPA2 Enterprise is virtually uncrackable with a strong password so even if someone can do a deauth they won't get very far assuming enterprise is set up correctly. Even if you do spoof the MAC you'll know there's a problem since the system only allows that one programmed MAC on the network. So they might not be secure sometimes but it keeps people from being nosey.
MAC filtering and turning off SSID broadcasting with WPA2 is about as secure as you can get.
You could've gone with a bridge/ap setup that would've eliminated wires but this can potentially lower throughput. I love Ubiquity products. They're up to par with higher end products like Motorola canopy.