I don't put much stock in virus scanners to be honest. All applications run in a sandboxed environment and cannot access anything on your phone without being prompted for (and pressing) "Allow" so its a moot point in my opinion.
In regards to lock, wipe, GPS location + send text to your mates saying your phone was stolen...
+1 for wave secure. It even sounds a high pitched scream (literally a woman screaming) when another sim is put in the phone. Its texts your mates the number associated with the sim....