I ride a 2015 Cannondale CAADX (Sram Rival) which has an FSA Gossamer crankset fitted with 46/36 chainrings. It has 5 bolts and a 110mm BCD. I'm an old man with bad knees. I never ride on the 46 ring, but I could surely use a granny gear. Is it possible to swap my chainrings for a 36/28 pair, e.g., say a Vuelta SE Plus Chainrings 110mm BCD Black 36T and a Vuelta SE Plus Chainrings 74mm BCD Black 28T, or say these Sugino Chainrings? Is there any reason (beside aesthetics) that I couldn't move my current inner 36T chainring to the outer position? If the change is possible, do you recommend any particular chainrings to look at?
I realize that I will have to shorten the chain and possibly shift the front derailleur. Is there anything else that I need to be aware of? Thanks very much for any help!