Nice was about to write also a tutorial for karam for his thread about wifite;py but you did it already. I have just the original script running and I have no problems at all. But your modified script made me wonder how does it turn monitor mode on?
Why don't you use the mon0 interface spawned by airmon? Since Mentalist Traceur updated iw it doesn't conflict with aircrack anymore and thus airmon works. IMO must easier as you can still browse the web with wlan0