I would not use Fluorocarbon as the primary main line. It is just not necessary. Generally, fluorocarbon is very expensive, rather "springy" and hard and does not take a knot as well as mono .... Fluorocarbon is also harder on the environment than even mono, so spooling your whole reel with fluorocarbon is definite "No-No" in my book ...
I use braid mainline with a mono (or fluoro) leader ...