Crucifixion, why the son? I'm very confused. I understand why Jesus died for us on the cross to pay for all of our sins and I understand how there had to be a virginal birth, so that Jesus could be perfect and without sin.

I'm so lost though as to why when God paid for our sins, the son had to do it? Why not the father? Is it related to the redemption covenant? I only briefly looked at that earlier. I'm new to the Bible and haven't looked in-depth at that yet.
Some believe (Lutherans for example, and me - I am Episcopalian) that Jesus is God incarnate, therefore it is not the son at all, but God that is hanging on the cross. But if you must, consider John 10:18

“No one has taken it away from Me, but I lay it down on My own initiative. I have authority to lay it down, and I have authority to take it up again. This commandment I received from My Father.”

Christ has chosen to accept the assignment and can also refuse. Even He has free will. Free to come and go as it were.