Any way you look at it, the more power you have the better. You don't have to crank the amp to the max if its too much. But if you aren't feeding your system the power it needs, you will never get the sound you want. Look at it this way..... you get more from crappy speakers with a lot of clean power than you ever will with great speakers and not enough power. Everything just runs better. You will be surprised what you can do with the right amp.
For what its worth, I have been researching a lot of speakers lately and I'm pretty convinced that Wet Sounds are the way to go. My plan is to go with a 3some or double up. Should be pulling the trigger asap.
Check with JonyB for help with audio equipment. He has given me lots of advise and is a pretty cool guy. I'm sure he can get you set up with what you need. Or at least point you in the right direction.
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."