Carbon forks are amazingly strong, and in many cases stronger than steel forks.
BUT
When they fail, they do so suddenly and without proper notice. This doesn't happen often, and for normal road use, I wouldn't worry about it. But since you weigh 220#s and know you plan to abuse the bike, I'd steer clear. Stick to steel which is far more forgiving of abuse, and has the courtesy to bend and announce a problem rather than just letting go without fair warning.
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