I cant say what's excessive, that's not my call...
I can say line lock is great. Why melt your rear shoes or pads? It's one wire and one cut in the hard line. Two step is also awesome. It's two wires VS how ever many thousands of dollars you have in your engine to not have to worry about over revving and launch at what ever RPM you chose. What's a two step cost, 45 bucks? That's a no brainer for me...
