Beautiful scratchbuild!!! I am impressed! this picture is Zellars, anchored in Valetta harbor, Malta. I don't know exactly when though.
You mentioned that you referenced USS Laffey DD-724, as she is at Patriots Point. I've been aboard her there. She no longer carries her VDS (Variable Depth Sonar) on the fantail. Having served in USS Lowry DD-770, also a FRAM II Sumner, I see a number of very minor detail absences, but the overall quality of your work is excellent. The VDS rig, however, is a signifigant piece of detail, which could be added at a later date if you choose to do that.
This stern shot of USS Dehaven, shows the VDS rig a little more clearly.
This antenna is the compacted AN/SPS-43 dipole array for the AN/SPS-29. The transmission line for this was semi ridgid coax, about 5" in diameter.
And this is the AN/SPS-10 Surface search antenna. This radar's transmission line was waveguide, about 1/2" X 1-3/4".
Sorry, my old brain doesn't function as quickly as it used to. These could be of use to anyone else who wants to take on a FRAM II Sumner.
Pete