Need advice to improve climbing gearing for a road bike: 2012 Cervelo R3 kept in the French Alps. Would like to change its gearing for easier climbing.

Currently: 10 speed Shimano Dura Ace with 34/50 chainring and 11/28 cassette with Dura Ace 10 speed derailleur, and Dura Ace 10 speed shifters.

Would like to change to: 11/32 or 11/34 10 speed cassette.

Question-1: what components, besides a new chain, do I need to find? That is what type of derailleur would be compatible with 10 speed Dura Ace shifters, which would accommodate 10 speed 11/32 or even better, 11/34 cassette?

Question-2: If I change just the cassette to 10 speed 11/30 or 11/32, would it work with the current derailleur without changing it?

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Hydes ride start time changed to 11 am Sunday, 25 November.

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Bontrager SSR Women's Multisport Bike Shoe
$30
Lightly worn
European Size 41
Gray
Closure system: laces and single hook and loop vencro strap
Compatible with 2-bolt, SPD-style cleats

https://www.trekbikes.com/us/en_US/bike … rCode=grey

Good condition $100 OBO
7 levels magnetic resistance
4" diameter wheels
metal frame dimensions:  21" wide x 49 1/2" long
adjustable front wheel location
20 pounds

Folds into 2 for easy storage and transport
Needs replacement rubber belt for resistance (available on Ebay)
photos available

Good condition $100 OBO
7 levels magnetic resistance
4" diameter wheels
metal frame dimensions:  21" wide x 49 1/2" long
adjustable front wheel location
20 pounds

Folds into 2 for easy storage and transport
Needs replacement rubber belt for resistance (available on Ebay)
photos available

See Ride Calendar for details.

See Rides calendar for details.
https://ridewithgps.com/routes/28562861?beta=false