It's a Salsa Journeyman Claris drop bar 650b converted to flat. The flat and drop frames are the same, but the drop comes with road bike components.

I have already upgraded a Sunrace 11-40t cassette to the rear with the help of a Wolftooth Components Roadlink which leads me to about 20.06 gear inches.

I currently have an FSA Adventure Tempo 30t/46t crankset in the front paired with the Shimano Claris front derailleur but was hoping to drop my small chainring to around 24t for the sweet, sweet, 16.5 gear inches.

Is it as simple as an easy cog swap and a chain? I'm not sure what parts need to be compatible to make it work.

Cheers all!