I use an Aker 1506, plenty loud enough, am also trialling an icomm for the static burst sound. As for fans, Echo here for n the boards makes a great set up, otherwise you can make your own easily. Fans from evil bay, battery holders with built in on/off switches from RadioShack, along with some rechargeable batteries and your done. If you get two wire fans (red +,black -) you can't go wrong.
Sent from my iPad using Tapatalk