Its nice to see that you have gone through the trouble and securing your wifi network. But the question still remains are you Secure ? .. Well no1 can answer that.
For me, the amount of effort I put in to secure something is directly proportional to the data I am trying to protect. SO the question is what are you trying to protect ?
Again, as you said about the strong password, hiding SSID, MAC addr authentication all that can be easily broken if some1 does capture enough packets and work on that offline and then come back with all the info needed. The tools to achive that were mentioned by Josh in the last "Perfect Strom Webcast".
So again the question remains are you secure ? ummmm it all depends how bad someone wants your data, but defense in depth is a great way to go.
Just me 1 cent
GPEN GCFA GCIH CISSP CISA GSEC OSCP C|EH Security+