I am afraid replicas of other games or movies can be a bit problematic for default game >> https://empyriononline.com/threads/for-builders-10-point-checklist.92816/ But other than that: thumbsup!
Hummel explained about size class along with other details in response to a question in the "Questions, Discussions & Feedback" sub forum. "1. Size class: as low as possible. Not above 12-14, ideally below 10. (The CVs in the size classes 11-15 and 15+ are very SPECIAL ships and might get a special group so they are only spawned in low numbers/only once per playfield >> performance concern; top-limit is 20-25 even for these. )"