Maybe. I'll certainly have more than 6 mechs in total, but right now I'll probably stick with just 4 or so. Once I get better at the game and can keep things moving faster I might expand.
Right now, I'm using C3i instead of C3 so that I don't put a big "shoot me to cripple the network" sign on whatever has the C3 master, and because C3i is slightly more resistant to ECM.