I really don't understand why you decided to focus on the bulwark. The whole problem with UEF navy centers on the general failures of cooper and valiant to perform their roles at any decent level. The shieldboat and cruiser for UEF are both totally solid support units.
Some good shit about cooper btw, you need to make 5 coopers (4500 mass) to beat a Cybran torp/stealth ACU. Aeon or Cybran would need to make 2 of their destroyer, which is coincidentally exactly 4500 mass just as well!
However if a single one of those coopers dies, the Cybran ACU can kill 4 coopers meaning you need to keep each 1750 hp unit alive which could be swarmed by frigates, ambushed by 3 torps, or sniped by a few salem shots. Also don't forget to put another 4500 mass into your destroyers so you can actually do what the exodus and salem can do with their main gun against frigates while doing damage to the torp ACU.'
This is forced by 2200 mass into 2 ACU upgrades.