Hi mate

When you say 1 and 4 line up

You need to set No:1 cylinder on TDC on compression stroke
To do this, turn engine over by hand with at least no:1 spark plug removed

Block no:1 spark plug hole with finger as you turn motor over, by hand not with starter motor

You should hear and feel pressure building and trying to push past your finger that is blocking the hole, cylinder No:1 is now coming up towards TDC compression stroke.

If you have rocker cover off at same time, probably also see it through oil cap hole
Both valves will be closed, ( rocker arms will have no load on the valve springs )

Once you have confirmed this step, ( might have to try a few rotations of crank to confirm)

Now continue to turn and line up crank pulley mark on the TDC mark

If done right, you now have engine on TDC compression stroke

Check where the rotor button under cap is now pointing

If it's pointing to No:1 cylinder on cap ( you should be close )
Timing will be able to be set within spec by rotating distributor housing once running.

If it's pointing to No:4 cylinder you are 180 degrees out on the timing.

You can either remove the distributor from engine and rotate 180 and re install
Or if your leads will fit neater.

Install leads in order 1-3-4-2 as DD said, starting with No:1 lead where the rotor is pointing

If your still stuck
I'm also in Sydney

Might be able to help you further if you want to PM me

Not sure how well I've explained that procedure

Hope I haven't confused you more

Cheers and Good luck