Sailfysh,
My boat is only 2 years older than yours. When I did a full inspection of the hoses in 2011 I found numerous weak spots. Plus many of the hose clamps were rusted and a couple even fell apart in hands.
IIRC there are only two different size hoses on the C310, 3/4" and 5/8". I just ordered 15 feet of one and 30 feet of the other (the longer hose for which size goes to the water heater). I also ordered a bunch of AWAB hose clamps. Any below the waterline hoses got the AWAB hose clamps.
I hate to be the one to break it to you but you bought a boat right at the sweat spot of maintenance. Most likely the previous owner didn't do a lot of preventative maintenance because he had a new boat. That means you most likely inherited a boat with a maintenance deficit. Guess who gets to fill it?
Some of the items that come to mind are rebedding all of the deck hardware, new stuffing box hose, new cutlass bearing, new motor mounts, dampener plate, all new hoses, new batteries which will likely include a charger upgrade, new running rigging, complete bottom job, heat exchanger cleaning and pressure testing, new exhaust elbow, recharging the coolant in the refer, flushing and replacing the coolant for the engine, complete rebuild of the head, replacing the macerator pump, most likely all pumps for that matter. How did I put this list together so quick? Guess who did the same thing when I purchased a new to me boat?
The good thing is you bought a boat with a very active owner's group. We've all been there and posted about it here. I also have a lot of post on my blog. Do you get Mainsheet Magazine yet?
Don't hesitate to ask questions here. You will get a lot of knowledgeable responses.
Good luck and fair winds,
Jesse