some years ago I used to work in the tyre industry, and if the correct data was unknown we used to set rear wheel drive cars with o – 1mm toe in, front wheel drive with 0 – 1mm toe out, although at the time (1980s) michelin specified everything to be set parralel. This is a good place to start, just keep an eye on tyre wear. Keep an even amount of threads exposed on each trackrod, this ensures that the tracking is correct when cornering as well as in a straight line.
When you are checking your tracking, you need a nice flat piece of ground, drive gently for a few yards and stop the car with the HANDBRAKE not the footbrake as this causes the front wheels to toe in.
Re-check the tracking 2 or 3 times particularly if using Dunlop type guages that rest on the wheel rim, this allows for slight buckles etc in the rims. DO NOT STOP LANDROVERS OR OTHER VEHICLES WITH PROPSHAFT HAND BRAKES, ON THE HANDBRAKE. They don`t like it.
This info is 20years old and may be out of date. please feel free to correct me if anyone knows differant.
Sorry, forgot your tyre pressures. Again the industry norm back in the eighties was if you don`t know start with 26psi checking for wear periodicly. ( im sure thats not spelt right) Shoulder wear indicates pressure too low and centre wear is too high a pressure