so im hoping start touring this year! i have a 2001 jamis nova that i think would work awesome but am wondering: will its current crankset (tiagra 39/53) be terrible? sounds like most people use mtb triple cranksets and im guessing i may need to get one.

would i be able to just slap on a tiagra triple ? or shimano LX triple (is that 9sp compatible)? i realize those are very different cranksets but would having 30T also be terrible for climbs? my main concern is not knowing what will work with what. i know my FD can do 22T so that should be fine correct? what about my shifters (tiagra)? lots of questions :\

any advice/suggestions? im flexible but would rather not replace the whole drivetrain or spend $300+ on this.