You should also consider turnaround time for 3rd party retipping versus Ortofon’s rebuild. And I believe SS’s retip-only service is more expensive because of the care required to preserve original cantilever - so the price difference may not be as much as you think! Ortofon’s rebuild service, at ~40% MSRP for basically a new cartridge (save for some wear on the body), is an excellent deal IMO. It’s a big advantage of the upper Ortofon MC lines. And that would be my preference, personally. Certainly, that tapered aluminum cantilever is very key to the Cadenza Bronze’s warm, musical sound - so definitely keep it!
I would be wary of a re-tip on the tapered Al cantilever. The mount Ortofon does is very clean. Are you certain a 3rd party re-tip won't come back with an extra blob of glue (i.e. higher tip mass)?
Fortunately since your Bronze is near new, you shouldn’t have to worry about this for a while. Just enjoy, and maybe start a swear jar for the eventual retip/rebuild?