If you take the ALO model and look at it in the ALO viewer you can see the bones and their names. This allows you to setup you hardpoints correctly in the hardpoints file. You cannot add more hardpoint than bones on the model as far as I know.
However, you can always change the armament. I modded proton torps. on some of the Imperial ships to balance out the Rebel Cruisers I added and hangers on the Rebel ships to spwan fighters and bombers. I also added torps and missiles to the starfighters in the original game plus the mods like the TIE Defender and E-Wing etc..
Only the blind can see.