Lots of good advice it seems that changing to a chainring more suited to a gravel bike might be a good upgrade (48/32 or 46/30). What would be the idea size cassette if I was to upgrade the chainring, also would i need to change my chain ? Also what does changing to a 1x11 crankset achieve and if I was to go that route what size cassette/chainring would work best. Thank you !