A lot of merit to having nice portable round tank. On the cheap side I have seen some nice ones on Parkers made out of the small thick walled Brute garbage cans. No problem with baits staying alive.
However, on my particular 2320 which is the same as yours, Parker has a factory oval livewell they install in the center of the cockpit. It is actually the leaning post/livewell combo unit (without the backrest) off the 1801 cc. It works great, has nice Parker cushion that covers half of the top. Works great as a seat and is in a good location for center of gravity/loading purposes. Lots of room under the deck in that location as well between the top of the fuel tank and the deck all the way back to the transom. Parker uses about 2.5 inch gravity drain out the back of the transom to drain, and clamshell/pump with a 5/8 hose just to the port of centerline coming up on the port side under the deck. The hole through the deck under the tank for the hoses to come though is about 8" diameter.
I primarily fished my boat so the permanent livewell worked out well for me. The girls liked sitting on the livewell cushion while cruising.
