worn clutch can be found with the car stationary. third gear, build revs, hold the car on the handbrake and lift the clutch pedal, and keep the gas in compensating for the load you are applying. basically either trying to overcome the h/brake or stall the engine ( but don't stall, you'll look silly 🙂 ). repeat until good and hot – the clutch that is. if it survives a good few attempts at that it'll likely be fine for a goodly while.
cv joints – go to carpark, wind down windows and turn circles on full lock, listening for any clicking noises. if all is quiet you're good to go, but check the boots and the arches/shafts for grease that will be sprayed around if the boots have failed in the past.
have a chat with your insurers – they're surprisingly amenable in my experience. mine even furnished me with a letter for a regular insurance company that permitted me to use no-claims for the new nail i bought… 8)