#3 is not realistic. The only way to deport millions of illegals is self-deportation. But your #4 and #5 are the start of self-deportation. Your #8 will help, but it is not enough. We need a culture of legal work and legal hiring on the books. Taxes still need to be simplified and reduced more. The tax and paperwork burden for employers is far too high. Illegals stay because ordinary people pay them to stay, it’s as simple as that.
#3 relates to those caught near the border.
Instead of releasing them into the US, they should be returned to Mexico immediately.