I recently bought myself a second-hand Condor Fratello. It is fitted with Campy Veloce (mix) groupset, currently with a 12-25 cassette. I'm coming from riding a 105 (11-32 cassette) for years, and this new ratio is really tough for me. So, I want to upgrade the rear cassette and chain, but keep the other existing hardware.
As far as I can tell, I have a short Veloce rear derailleur (Given that you can buy two versions of this derailleur, a 'short' or 'medium' version, see here: https://www.chainreactioncycles.com/campagnolo-veloce-10sp-rear-derailleur/rp-prod57880). See below for a photo of the derailleur as it's mounted to the bike.
Here's my question: I'd love to get a cassette that provides the 'easiest' gearing possible, ideally something close to the ratio I had on my 105. Will the Veloce 13-29 (https://www.wiggle.co.uk/campagnolo-veloce-10-speed-cassette) work with this derailleur? Moreover, could I go ahead and grab a Campy cassette from a different product range with an even more comfortable gear ratio?