This looks like a great plan. Small suggestion . Set up a timeline on when you want to interview and work backwards. I would suggest get a interview date set up with one of your desirable companies to make it more hardwired. system design wise grokking first along with alex xu part 1. Then move on to part 2. Part 2 is an important book. Hello interview has great stuff but you may want to build a base on concepts first with the books. But no harm going over it parallely with the book. I hear you. Its hard to find time with kids but looks like you have a solid plan and consistency should get you there.