Multi-cannons only go up to Class 2, unfortunately.
are handy for speccing ships.
In-game, best places for parts supply near Wangal are:
HIP 19758 (Mellotte Terminal)
I wouldn’t worry too much about powerplay at this time. There’s a lot of other things to get your head around
Oi! That's Baron von Schnellenstein to you, mate. No, it doesn't matter that I'm an Imperial Prince!