May I respectfully ask if by perfect, you mean that Adam was without sin before he freely chose to abandon the requirements of his creaturely status? Please note that I have referred to the requirements of his creaturely status.
I have been seeing some errors on this and similar threads, often made by some Catholics. For example, one error is that somehow Adam was in the state of childish innocence, not knowing about good and evil. Another error is the avoidance of Adam’s status.
Regarding your comment.
“Sin came after the conversation with the serpent. The conversation with the serpent involved Disobedience to God, self serving attitudes and probably other things as well.”
Catholicism goes into those “other things”.

For example, Catholicism verifies St. Paul’s teaching on the reality of Jesus’ connection with Adam. Romans 5:12-21. In addition, Catholicism includes the state of Adam’s soul before he yielded to temptation. Genesis 1: 27. After the Fall, the state of Adam’s soul changed. Genesis 3: 23. Unfortunately, one does not hear much about Adam’s soul.
Obviously, the original status of Adam’s nature before the Fall would include his soul in its possible perfection before he was a citizen of heaven. (possible is the operative word)
Please allow me to change my opening question to:
What all do you include when describing Adam without sin, that is, before the Fall?