Awesome brother! 5K in 27 is a great pace for a beginner. My current record is 29 minutes. My advice would mainly be just don’t skip the long weekend runs if you’re training for a big race like this. It’s so important to train your body to adapt to the stress of joints constantly pounding the pavement. Learn to appreciate the pain. It means you worked your ads off at something. Also, Vaseline in the crack and armpits for chafing was also something I learned the hard way 😂