I’m Enzo. I’m one of the judges on the “Technically Correct” category. I’m just dropping by to say that your design looks great!
A lot of realistic near-future spaceships are very linear in design with large symmetric “wings” to radiate heat away from the constant thrust ion engines. The reason for this is orbital mechanics and space propulsion. Thrust needs to go through a craft’s center of mass, otherwise you create moments, or in simple terms, forces that will cause the craft to turn in a direction you probably dont want to go and spaceflight isn’t at all like air flight; there is no air for control surfaces to manipulate
Thanks for the comment, really interesting! I’ve put the engines muzzles in the middle of the ship, but do they maybe have to be in the end of the ship? Also, would the front cargo compartments maybe be better if they were built like a tree pointed star like the antimatter reactors? To counterbalance, or does this not matter?