IMHO and bluntly, find another boat. My father owed 3 Catalinas in the 70's and I worked for two dealers. I think that they're great coastal boats, but a s friend who is a very experienced boat carpenter, delivery captain, and licensed captain said, "I wouldn't sail around the world in one". Ene though it's true that boats spend most of their time tied to a dock (99%??), it's that last 1% that could get you and your crew killed. I wouldn't climb Mt. everest in WalMart boots, nor would I take my chances at sea with a coastal boat.
I've seen deep water, having about 17000 offshore miles. This is serous business.
Sabre 38 "Victoria"