Jim, first thing you should do is get an unregistered vehicle permit so you can drive the car for repair / testing purposes. These cost $60 for 28 days. You won't need someone with an LMCT for a RWC. Many local mechanics do roadworthy checks and supply RWC's. You may want to ask them if they're aware of the different rules that apply to these older imported cars regarding LHD, seatbelts and colour of indicators. As you mentioned, the headlights must be replaced and that's it. The RWC is a thorough safety check. You may need to replace all front end bushes, ball joints, brakes, shocks, ensure all electricals work, repair any seat rips (use seat covers) replace chipped or cracked windscreen, ensure battery is secured, wash engine & fix oil leaks etc etc.
Once you've got the RWC, you make an appointment with Vic roads and take down the car, import approval, RWC and proof of purchase. They will then check numbers on the car and you're done. The whole process takes less than half an hour.
Evan.