Focus on the 3rd guy. 2nd player will be 21 next week, and his is and is is low for a sf. I suggest you to give 5-6 weeks OD, and 3-4 weeks 1on1 for guards, 1-2 weeks passing. When you give them one pos. training, you can train just the first, and the third one; and maybe try to get 48 min. for the second in scrimmage. But if it's not possible, then just train him, when you train two pos. trainings (like 1on1).