That would be 48/16 or a 3 to 1 ratio. I´guessing you are a lighter rider than I am at 225 pds. If that´s comfortable, go with it.
The modes on a moscow are more about the speed you want to travel than power. lower gears give you more leverage
against the pedal & reduce effort. It´s basically about finding the sweet spot that works best for you . On the flat, (theoretically),
mode 1 in a low gear at low speed,( 10 to 12 mph.) will provide max range...., but the world is not flat, people have different
levels of fitness & weight, & want to travel at different spds. As it sez in the manual,( I concur), try using all gears & modes to
familiarize yourself with the bike´s capabilities. Remember to ease of the pedals for a second as you shift. That saves wear & tear
& makes for smoother shifts. Find that sweet spot. Be safe & situationally aware!
Just realized you are in Italy, so I guess your dealing with the EU 25 Kph limits., That´s simple enough to change to mph, but don´t get
caught
(Itś in the manual). Hope you don´t ride like Italians drive. (just kiddin´)