There are a few disadvantages of using the trophy room instead of a cargo bay. Scrutiny is one, you can not really hide thing well there even if it provides criminal objective points. In addition the room can only be selected once, where you could select multiple types of cargo bays, not really relevant for your ship build though. Lastly if you did need to haul bulk stuff like grain or criminals, you would not have a dedicated place to put it and that would have narrative effects.
The lighter bay also has much more room for personal craft including default non combat landers and stuff. Otherwise you are using makeshift ports in the hull, which normally are rare to keep the ship armored. (the shark whatever will be fine though)
For the Rogue planet option it is great to have it, with a few limitations. It needs to be in the expanse, it needs to be rogue, not near any star, it needs to be mysterious dangerous and weird. Ancient beyond recognizing or recently pulled from the star by unknown means. Glad to have some world-building taken up by others, I would be able to incorporate it in at least an endeavor a little later if not immediately.
While I am accepting applications they will probably be put in a reserve since the existing applications are all fine. We are approaching too big to handle levels.
I need to get something to eat, the flesh is weak, then I will tackle finalizing your guys characters one at a time then look into a starting post for you guys to at least do some IC interactions.