I'm looking to join the crew. Well, I have a bike. It's an old specialized that was given to me by my father in law. I just plan on doing some light trail stuff, take my kid out and about, that kind of thing. Anyway, the bike has been sitting outside for a couple of years, what do I need to look at replacing to make sure nothing breaks on me. I kinda figured a new chain, new brake/shifter lines, maybe a new derailleur?