Yes, I know how they are thinking and the pain you are feeling. To accomplish the implementation of this change management process you will need a lot of people working for you. Use this to your advantage. Quickly study up on the subject so your experience with the systems will not leave you with a dog pile of new bosses to tell you how to do your job. Instead insist that you need to hire more people to manage the overhead.
In the end that probably won't work and you'll be kept "at the bottom" where you are now.
These changes are going to be enormously expensive and despite all you have done, it will be perceived that you created this mess by not having a change management system in place to begin with. Of course, they will also see that you don't know about change management and will prefer to hire someone who already knows about it.
Now I'm not going to down change management processes. They can prevent problems and identify people who would otherwise deflect blame and hide in the shadows. But from what I have seen, you're just getting the beginning of the tsunami of changes.
Push for testing systems and additional hardware to support it. Of course it will also require more space and other resources. Try to get ahead of this beast.