I have 2 Apple TV's, 2013 MBA, iPad Air and 2 iPhones running off wifi. I currently have the previous model Airport extreme flat square. It works great however when I go outside on my deck at the opposite end of the house from my base station, I only have about 1 or 2 bars on my wifi indicator. I was thinking of adding an airport express and putting it on the other end of the house to extend the signal. Will it work wirelessly without ethernet connection? Another option I thought about was upgrading my extreme to the new model since the MBA is A/C capable. Then use my older base station as an extender. What do you think would be the better way to go? will I benefit at all from Wireless A/C over Wireless N? IS it noticeable?