Exactly
The point is that the only prohibiton was against even knowing good and evil, in other words: law. They were, in effect, commanded not to live according to the law, they were commanded not to even have that knowledge in the first place.
Now that you are a heir to the Second Adam, Christ, you don't have to make that same mistake. You don't have to live based on the knowing good and evil, but simply based on knowing the Lord.
Lets look at the scripture which talks about the first Adam and the Second Adam. By the way the context in actually about the resurrection.
1Co 15:45 And so it is written, The first man Adam was made a living soul; the last Adam was made a quickening spirit.
1Co 15:46 Howbeit that was not first which is spiritual, but that which is natural; and afterward that which is spiritual.
1Co 15:47 The first man is of the earth, earthy: the second man is the Lord from heaven.
1Co 15:48 As is the earthy, such are they also that are earthy: and as is the heavenly, such are they also that are heavenly.
1Co 15:49 And as we have borne the image of the earthy, we
shall also bear the image of the heavenly.
In the present Paul says that we are after the second Adam. We are flesh and blood after the first Adam but we will be changed because:
1Co 15:50 Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God; neither doth corruption inherit incorruption.
1Co 15:51 Behold, I show you a mystery; We shall not all sleep, but we shall all be changed,
1Co 15:52 In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed.
1Co 15:53 For this corruptible must put on incorruption, and this mortal must put on immortality.
Paul is saying that we are going to be after the likeness of the second Adam when we are resurrected and changed.
1Co 15:21 For since by man came death, by man came also the resurrection of the dead.
1Co 15:22 For as in Adam all die, even so in Christ shall all be made alive.
Rom 5:14 Nevertheless death reigned from Adam to Moses, even over them that had not sinned after the similitude of Adam's transgression, who is the figure of him that was to come.
Rom 5:15 But not as the offense, so also is the free gift. For if through the offense of one many be dead, much more the grace of God, and the gift by grace, which is by one man, Jesus Christ, hath abounded unto many.
What i am getting from these passages are:
1. Because of Adam's sin we are all supposed to die but God's grace will save us from the penalty of death
2. By the power of Jesus we will all be resurrected and transformed to his likeness.
It is easy to say nice things that makes sense like you did but the bible doesn't really support what you said. The first Adam was made a living soul and all of us are going to be living souls until we are changed. I understand what you are saying but i don't agree because all the bible text which talk about the first and second adam do not really show that we are not subject to the law of God.
There is one important thing that you have forgotten. God told the first Adam not to eat of the forbidden fruit and sin entered the world. The second Adam came and told us to have love fro God and love for our fellow men which is the message of the 10 commandments. If we disobey we will be following after the same example of the first Adam. Since we do not keep the law to be saved we then keep it out of love for the bible says that love is the fulfilling of the law. As long as there is sin in the earth there must be the knowledge of sin which is by the law. It is only when the sin is destroyed and the world is made new then we will be like how Adam and Eve was before they sinned. Disobedience to God's command is what caused this whole mess so therefore disobedience to God's commands will not help.