If you're feeling prepared or eager for something, instead of using the phrase "am ready for", there are a variety of synonyms you can use to convey the same sentiment. For example, you could say you're all set, primed, willing, or game for whatever task or event you're anticipating. You might also describe yourself as geared up, psyched, or geared for the occasion. If you're feeling particularly confident or excited about something, you could say you're poised or chomping at the bit. However you choose to express your readiness, there are plenty of words to choose from that will accurately convey your feelings.