You get really creative and buy a 30 button mouse or you program weapon groups. You sit there for 20 minutes in space and fire each one of your weapons and group them by let's say...
1. All Weapons
2. Port
3. Starboard
4. Fore
5. Aft
6. Ventral
7. Dorsal
8. Self-Destruct
"Abstinence of the Heart; Sever Your Emotion Like A Defective Circuit..."