I suppose the idea is to have more than one working together, maybe with a DDG 51 farther off to provide air defense.
Regarding the RAM vs Sea RAM, I suppose back in the 80s this argument was valid, but modern phased array radars and central battle management systems should compensate for the disadvantage of a non local radar.
The LCS has a Sea Giraffe radar (Swedish/French) which is specialized in detection of small, fast moving air and sea contacts.
It should be able to cue RAM.
The 20+ year old 143 missile boats of the german navy use their original radar (optimized for surface search) to control the RAM launcher.
With a decent radar, RAM today can engage aircraft and boats as well. Early versions were limited to missiles, and the first versions to active radar guided missiles as targets.
With SeaRAM, you have a missile CIWS and nothing more.
Surprisingly much non US technology in both LCSs. Freedom has italian diesels, the main radar is from THALES (but developed in Sweden) the main gun is swedish, the missile defense is german (officially RAM is a joint project but Diehl/BGT developed both warhead and missile based on existing US technology).
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