Coast to Coast: gearing and brakes

[rebeccaC]

Found a bike mechanic who is going to swap out my gears with either a shims no 105 11/32 or a mountain derailleur 11-36. Any advice as to which set up would be better?

You'll notice the difference between 27 and 32 but i don't know the terrain you're riding. A mountian would give you the ability for 32 to 36. Useful if you find you want to go to 34+ later without changing a rear derailleur again.