Radar picket ships:
I spent some time working on that project a few years ago. (the kit is still on my shelf of doom). I found a lot of photos on the web, including a few sites with collections of photos from crewmen. The biggest collection seems to be found at
http://www.yagrs.org/home.htm, although there are some different photos at the navsource
http://www.navsource.org/archives/09/62/62idx.htm for AGRs. You may bump into a designation obstacle, as they were typed as YAGR for the first two years during which they had booms on the two forward masts, and then retyped (in 1958, I seem to recall) as AGR, and the booms were not in place on the eight ships built in 1958.
Besides the obvious challenges of all the masts and antennas and radar dishes, we start with the fact that all sixteen AGRs were converted from the "boxed aircraft transport" version of the Liberty ship, the Z-EC2-S-C5. As far as I can remember, the only visible difference between this and the standard Liberty ship is that the aircraft transport had only four holds instead of five, so that they could handle the size of the boxed aircraft. In my 1/700 kit, it was a major pain to remove the five hatch covers and replace with four, of roughly the correct size and location. My kit went to the Shelf after I had built and installed the masts and kingposts and then decided maybe I had made them too thick. Or maybe they were ok. Or maybe too thick...
Finding PE for the various radar dishes was the least of my challenges - they are all standard US radars.
Good luck with your project,
Rick