As stated above, this pump has worked very well for me. I believe it is rated for a well somewhat bigger than mine and the wash down pressure is very strong. It's located about 6' from the pickup and is about 10"-12" higher so it pulls a good head too. Dedicated pumps are the trick way to go. You get exactly what you want and if one fails, you're good to go on the other.
Still, the live well (if you are a big live bait user) is the important one. You can always improvise washing blood and guts from the deck.
This fit the bill perfect for my needs and has again, been very reliable over the last 5 years.
Good luck.