I bought my 1st 'cross bike last month. It's a Motobecane Fantom CX. I removed the front derailleur and shifter cable. I'm gonna replace the 36/50T chainrings with a 42T. What chainring do you recommend? I know I don't need one with ramps/pins. Now for the 'cross guards. Is it best to have one on each side? Or does that come down to personal preference? I'll appreciate your comments and/or expertise.