I bet you would never use half of that set. You could put together a decent set of tools specific to your bike for a whole lot less. Lose the chair too. I have a Park derailleur tool and I think it is very handy. Both of my bikes were out of alignment. Shifting improves greatly when everything lines up. Yes, you won't use it everyday but most of the auto tools I have don't get used much either. If you're not handy getting the derailleur alignment checked at the LBS is a good idea.