Hat Trick is probably a little shy about suggesting his own airplane kits but they are a fine choice. And cheap to boot. I would suggest a bunch of Chokers B class ships from Hat Trick. I think he gives volume discounts and has a combat guarantee where if you don't use the kits you buy from him he'll buy them back. But you better consult his web-site. www.hattrickrc.com
My only other suggestion would be to just use stock mufflers for club level and leave off any muffler upgrades until some of the guys want to fly at an RCCA sanctioned meet. The higher speeds will result in more damage and may scare off a few new pilots wanting to join in on the fun. Good Luck. I also agree with what has been posted about Hitec radio gear. HS-85MG's and 555 recievers with plug in switch are the combat standard.