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hippy
Having started to tow my son in a trailer, for increasing distances and with a view to go longer and hillier I am spending some time considering acquiring some additional gears/gear inches. Bike is an oldish genesis vapour, specs as in link, 10 speed tiagra 4600, currently running a 12-30 rear cassette and 46-36 crankset and when towing trailer am only in bottom 6/7 gears.
https://www.thebikelist.co.uk/genesis/vapour-2014
Options considered so far would seem to be
33/34 tooth inner ring
Chancing a 32 or 34 tooth cassette (possibly with a roadlink?) and new chain
46-30 Sub compact crankset e.g. miche Graff duo or grx (which might need a new front mech?)
Which/which combination is likely to
1:work
2: make an appreciable difference
3: be relatively cost effective
A gear inch calculator seems to suggest about a 2-3 inch gain per option, which is about 1-2 gears? Should I just get stronger/buy a new bike/s, have I missed an obvious/cheap solution. 46-12 is plenty big enough for me when unloaded but wouldnt want to lose too much top speed while this currently my only bike.