Just be advised that doing a low budget "upgrade" like this, mixing and matching components, you may encounter some unanticipated challenges. There were some combinations that worked acceptably when new, but if you are working with worn or mismatched parts, I suggest you manage expectation.

I ride bikes ranging from 5 speed "analog" downtube shifters to Shimano DI2 (which is awesome!). Each is different and enjoyable. But the more advanced setups like Record 10 (for ex) require that everything - cable tension, chain wear, etc - be in very good condition and perfect adjustment to give satisfactory performance.

My #1 bike - best bike I've ever ridden - has Campy 9 speed which I think is the smoothest running - kind of the sweet spot. I find the Campy 11 and SRAM systems to be very fussy - not to mention that a replacement cassette can cost 300 bucks! which is crazy.

Mark Petry
Bainbridge Island, WA USA