I just rode about 45 miles this morning with a 48 16 single speed, T shirt, regular shorts, and regular shoes. Will clipless pedals, clipless shoes, cycling shorts, jersey and multi gearing make a difference in terms of speed. I did about 15 mph avg for the ride, how much difference would having all that equipment make? Will my speed go up with the same effort or will it stay the same? I found climbing up hills very tough, at 8% grade I was pedaling at 25 cadence.