Best of luck in your new job,
As I've just recently learned the hard way, you have to do what is best for you, and sometimes that is not what is best for where you work. Currently the phrase "People quit managers not jobs." rings true.
I have a similar manager, always micromanages my projects even though he has no idea what is going on. I explained to him that I'm 'lazy' I want to design and build projects that work so well I never have to touch them again. But then management gets their hands on things and they always go south. Its not even about the cost of some these jobs. It's the old outdated way of thinking.
We spent 175K 2 years ago to replace a TI5 PLC with an S7, only to leave 30 year old control wiring throughout the machine that was laying in oil soaked trenches. Blows my mind...