Nightides,
I installed a set last year on a 228. I mounted the pump in the bilge area, below the factory livewell, on the starboard side. I know they recomend mounting it in a dry location, but I've seen them in that area on plenty of other boats. Not too many choices on that boat anyway, especially with dual batteries and an oil injection tank eating up space on the sides. If you decide to go that route, just measure the depth of the livewell, after you remove it. That will give you a reference mark to work with.
I don't think they supply enough tubing to make the run all the way to the cabin either.