Hey Melissa,
Try aiming for a 7ish bedtime. If you want to cluster feed, then feedings would probably be at 7, 10, 1, 3, 5, and bedtime. or you could just do a regular 3 hr schedule, 7, 10, 1, 4, bedtime. I never cluster fed or did a dream feed and my ds adapted to his routine, and sleeping from 6/6:30 until 7 around 3.5 mths.
Good luck, Heidi