That's actually sort of what I did. I didn't explain it to someone else, but went through it in my head, talking to myself explaining the design. Explaining it to someone else must be even better!
Yes, great work! I think of PCB design like golf -- low scores are better, but nobody hits a hole-in-one every time they tee up. 3 revs is shooting par for even simple designs, much less a complex RF design like this.
Having someone else look over the design is always useful. A healthy distrust of datasheets is always useful. But at some point, you have to ask yourself you have reduced the risk of errors enough that a couple of rework wires with get you through debug, at which point just go fab it. Blue wires tack-soldered on are a fact of life in prototyping. It is easy to obsess over PCB designs, but "fail fast" applies here, too.
