1) Every raft should have a PLB/Locator beacon. Two only is not acceptable because you have no way of determining which rafts will survive. A ship is more likely to be lost to the sea rather than enemy action. Therefor it follows that not equipping every raft with a PLB will have unacceptable political and public consequences.
2) Use AMK heat sheets for the survival blankets.
3) The rafts should meet or exceed USCG/SOLAS regs irrespective of your Navy's exceptions.
4) All devices should run off AA lithium batteries. I would not personally be happy about having two types of batteries for survival and signaling equipment.
5) By standard military pocket knife do you mean the 1940's Calli mus designed so called U.S. Army or Marine knife? A one handed opening blunt nosed dingy knife might be a better choice.
6) Chopping/cutting board?