Congrats to you two!
Being 'youngsters' at 78/75 we have been saving our knees with easy gears for decades!
We utilize an 11-34 9-speed cassette mated to 54/42/30 chainrings.
While we seldom use the 30/34 combo, it's still nice to have on the rare occasion when the climb/wind/body throws us an exstra challenge.
Growin' old is not for sissies!
Pedal on TWOgether!
Rudy and Kay/zonatandem