[Fyron]

Also, you probably should remove the restrictions about the 50% of the hull being specifically for fighter bays. Instead, make it that 50% of the hull must be composed of bays for other sorts of launcher bays, so that they may be used for multiple purposes, not just one.

Unfortunately, this is not possible. The only valid % requirements are:

Requirement Pct Fighter Bays
Requirement Pct Colony Mods
Requirement Pct Cargo