I consider the CS 30 a very nice racer/cruiser and think it a great boat for how you currently use it.
But it would seem a woefully poor choice for the purpose you describe. Other posts have mentioned some of trhe reasons that is true, additionally it is not a particularly tough boat, and even if you threw a lot of money at one, you can't make it into something the designer and builder didn't intend it to be. Just because it's a CS, doesn't mean it has the qualities of a boat like the CS 36T, a boat far more suitable for such purpose.
I recall a CS 30 was abandoned a few years ago during one of the Bermuda races...while facing conditions not a fraction of what you might face...there must be something to learn from their experience.
Certified...in several regards...