See if there’s a mobile mechanic specialising in Pugs. You could try browsing
Aussieflogs but it’s cliquey and may not be overly helpful in real life. You never know, though - might be an invaluable contact found that way.
For DIY: If you don’t have a calibrated wrist I think an inch-pound torque wrench is handy. Skills required include pinning the flywheel and cam, replacing oil seals, maybe working out a way to lock the ring gear teeth if the belt won’t nicely time with the pinning and you need to loosen the crank sprocket bolt.
Happy to try helping with cheapest online parts I’d use myself. It’s a 2.0, not a 2.2?
Depending on the registration remaining you’d likely see $200-$600 “as is” in a cash sale, maybe add $300 if it’s a wagon.