Can you get good 10 speed parts? 10 speed is old and pretty much the forgotten speed for road from all manufactures now, Campagnolo being no exception.
Not seen any mention of shifters, 8 speed Ergos aren't going to be 10 speed compatible, maybe there is a conversion out there, but by the time you have done that, the cost of just buying 10 speed (if you can find any good ones) would equal the time and effort taken for this
For the hub, thinking your going to be limited to 8 speed, your need to ID exactly what you have, but even though they look similar, it wasn't till 9 speed came along that you start to get hubs that are still usable with more recent cassettes, this link covers it
8 speed and 9 speed Campagnolo | LFGSS
Is it worth doing? That's for you to decide, I have mid 90's bike currently with 9 speed Daytona, when the shifters wear out it's probably going change from Campagnolo, in your case, would do the math on how many parts you can use, how much new you need and how much needs replacing vs selling the parts you currently have and using that money to buy new parts
If you're looking at selling, it looks like a clean bike now, is it worth doing anything with, rather than let the purchases worry about what they want to do with it? Thinking that the shifter conversion idea wouldn't help a sale, probably detract from it, would look at this option if was planning on keeping it.