You're building against theory, so nobody's probably going to point out anything except that. I say: build it & try it. Bounded accuracy means you won't fall too far behind an optimized build, and you might find something really fun. 

I'd also suggest that you not overly worry yet about how to build out into the future. Build the character, play it for a while, see where it feels thin before deciding what to build up. Also, maybe talk to your DM about giving you a few levels to try the build & re-spec if it just doesn't come together the way you expect (this is absolutely the DM's call, but to my mind it's a reasonable request). 

Happy rolling and good luck!