Hello Atlantic cruiser and welcome to Sailnet!
Can the chainplates be moved outboard and fixed to the outside of the hull? On a cruising boat that doesn't point too high to begin with, moving them outboard can offer a number of advantages. While you lose a bit of the sheeting angle, you gain in other areas. You can make very strong and inexpensive chainplates out of stock SS (even make a reserve set while you're at it). They are easy to inspect and re-bed when necessary. They tend not to have corrosion issues because they are exposed to air and freshwater rinses. They free up your side decks, making movement on board safer and easier.
Just an idea ....