My road bike only has 2 ring gears what I did was to put a real small front ring on. That gave me all I need to get up hills. The shifting in the front is kind of unique.
I been thinking of changing to a three ring setup with indexing shifting but can't find shifters to fit my old bike.
Lets see new crank set, new derailers, new chain, new shifters, new cables, and new cluster might as well buy a new road bike.
Joe