Our D just completed the first year in Bio Scholars. She says the program was not too time consuming and she’s glad she was in it. As for Barrett, it’s small for four people. See this YouTube video for a view of a student’s Barrett room this past year: https://m.youtube.com/watch?v=txEBa4ZB8bw
It will give you a good idea of what to bring and what to leave at home. Good luck!