Portables typically run 100w plus or minus and mine did come with everything I needed. But the OP is talk about getting solar installed, not portable. That Renogy kit also comes with everything needed and you can get them in 100-400w sizes. They just add more panels and increase the amps of the charge controller. I pieced mine together and anguished over it all. The kit would have just saved me all that.
I don't think the OP is interested in the PMW/MPPT discussion.
Red31, thanks for posting that link for me. My work place blocks that somehow.