I am thinking of getting a SRAM OG-1090 Red 10-Speed Cassette 11-28. I currently ride on a Shimano Dura ace 12-27. The above is lighter and I get two more gear options. My plans are to ride in the mountains, plus Durango to Silverton (have not done this yet) plus a race in Davis mountains, Texas (first race). I have ridden in mountains of 8000 ft elevations and many hills but with the other combination I think it may help.
My questions are:
Will this give me the advantage quicker and ease up mountains?
Do I need to get a chain the works with the new cassette vs CN7800? I am in the process of buying a new chain (plus replacing the crank set FSA K-force light compact ceramic) so I was thinking should I upgrade the cassette while I am doing so.
I just recently got some HED jet 50s and can tell a big difference and really like these tweaks that add to the performance efficiency.
Thanks for any information