98 has you on the right track. If you can do it low weight with aluminum, I would certainly do the same. The carbon fiber, like I said, was not something I would be jumping in a fox hole with. The Carbon15s were known to break at the receive extension. Other manufacturers have molded in a steel insert to stiffen it, but I still say they don't have the strength an aluminum lower does. I'm subscribing to this thread, it's going to be fun to see what you come up with. Picture, picture and more pictures please!!!
Shane