For the complex analysis stuff, this is a good and condensed review of the topic:
https://www.amazon.com/Schaums-Outline-Complex-Variables-Outlines/dp/0071615695
Please allow me to recommend (this book) . It also has a kindle edition.
Looking at Visual Complex Analysis, it's definitely for mathematicians. It's methodical but doesn't have enough worked-through problems to be for direct study.
The best I can come up with for you is Schaum's Outline of Complex Variables, however I haven't read it, so I can't say if it's exactly what you need.
Now, regarding CA, I think you only need to focus on a subset. Theory, say Liouville's, isn't a requirement. You should focus on L2/compact support and CFD/CHD which you should be able to find information on in the appendix for those books and cross-reference in the Shaum's. I'm chewing through tomes like Mathematical Theory of Finite Element Methods but it's likely you simply don't need something this robust; an appied-only book like Applied Computational Fluid Dynamics Techniques should be more up your alley.
This is my best guess, since I haven't taught for an engineering program yet, so take my advice with a grain of salt. I'd be interested in hearing about your progress, if you find the time at some point later.
Until then, good luck.
It sounds like you're pretty advanced for a high school student. I wouldn't normally recommend this to someone so early in their studies. But here is a no-frills crash-course (that also assumes you're familiar with calculus). I see used copies on amazon for under $10 delivered.
http://www.amazon.com/Schaums-Outline-Complex-Variables-Outlines/dp/0071615695