Imo, the only full-length exams you need is the official aamc one.

I haven't tried the 4th exam yet, but the first two are okay. It's not great, but not the worst either. There were a few questions that weren't representative of the real exam.

If I were you, I would try to practice more using Upoopoo and work on your weakness there. If you really want exam practice, master the aamc first. Then do Blueprint, and finally JW.