If your mechanic gave it a good exam and like it, then you did great. Get the oil and tires, then see how it runs. Me, I'd skip the timing chain for now, that's some big $$.
You'll also want to check the coolant and tranny fluid, change if there's any doubt about them. Make sure the correct fluids are used.
And give it a good cleaning, you'll like it even more! Just don't 'steam clean' or power wash the engine, that'll mess up electrical connections.