Glad you guys are getting some combat interest. Here is the RCCA site with the rules and a lot more!
http://www.rccombat.com/rcca.asp
I can't speak for or against the Lanier ships as I scratch build my stuff, but they are probably a good way to get started and that .25 FX is just what you want!
Combat is a ton of fun, you guys will love it
rrh