If you think they may be overkill.....then they will. Wetsounds are crazy loud. Sounds like 4 good quality components will do. I have experience with Polk and kicker and I like them both. Polk for sound and Kicker for volume.
Just get you a quality set and put some money in a high end amp. That sounds like all you will need.
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2004 Supra Launch SS
Acme 913 prop, WS 420, Kicker L5 sub, JL/Kicker amps, Kicker in boats, Polk mm in roswell bar, 3000# ballast.
"Never underestimate a man that Overestimates himself."