Ric Shaw can do the corner weight and alignment. He set up and drove the car which won the Production Sports Championship in its day. He is known for the RX7 but is still up to speed with the MR2. Another option is Rotor Master in Hornsby. Another Ex MR2 racer with all the skills required to set up your car. Another recommendation would go to Gary Wilmington at Marulan driving centre. Another MR2 driver from the 90's who is very good at car set up.
The closest to you is the guy who sets up all the cars for the 'Spax' dealer who is in Gosford. He cuts no corners. The 'spax' dealer is world renown for his work and highly recommended. His name is Greg Nolan (creator of Nolathene bushes).