I lived on and sailed a Beneteau in the Caribbean for 2 years. Good sturdy boat.
You didn't say whether or not you had a dedicated generator. I don't recommend gel cell batteries. They require a dedicated charging management system and are very sensitive to charging schedules. AGM batteries are a very good compromise between conventional lead acid and gel cells and they are much more tolerant with respect to charging and can accept higher charging rates than gel cells.
The electrical power supply cable for the anchor windlass comes up thru the anchor chain locker inside a standpipe. Unless the design has changed, the top half of the standpipe is flexible hose. This hose takes a beating from anchor chain and rode banging around in the locker. It must be double clamped top and bottom and inspected regularly. Also, ensure the locker drain holes are kept free and clear of mud and other debris. If the hose comes loose from the standpipe you stand a good chance of getting water down the standpipe into the forward stateroom when water comes over the bow.
Changing the oil on your Westerbeke is much easier and less messy if you install a flex hose from the sump drain plug fitting forward to an easily accessible point in the engine compartment.
Keep a close eye on your in-mast furling system and take good care of all the components. You cannot reef the main if the system fouls.