OK, that helps. Carbon adds stiffness and is light, so racers and performance sailors love it. It is also expensive and brittle. The brittle part should concern a cruiser. When it fails, it fails catastrophically. A few cruising boat manufacturers use it, but in concert with other materials to take adavantage of it's strengths and mask it's weaknesses.
Kevlar is tough, extremely puncture and abrasion resistant, and is much more commonly used in cruising boats than carbon.
But the material is far less important for cruising than the design, and (some may disagree with me) a modern race
boat like the Farr looks like an awful cruising design. The mast
is a tall, skinny, bendy thing designed to be handled by an expert racing crew, and is not suitable for a cruising couple.
There are great resources for cruising desgns, but some of the things you should be looking for might include:
seats you can stretch out on to read a book.
A provision to fit a snug spray dodger
for cold, rough days.
ventilation - preferably large Dorade vents. If you are living aboard
, do want some air below when it's raining?
A hull form that will provide a seakindly motion.
A much longer attachment of the keel
to the hull than is found on most racing boats. If you are cruising, you will eventually run aground, and modern racing boats are very prone to structural damage from fairly minor groundings.
Don't get too hung up on materials, focus instead on the suitability of the design to the intended purpose.