PBJ denim looks a lot different than acne raw denim. There are lots of different shades of indigo and textures to raw jeans. With the style you're describing you should definitely stick to apcs, acnes, diors, and other more flat denim. Don't be afraid to play around with non-raw jeans though. Black overdye, different shades of grey, some of the drkshdw washes, etc... Raw indigo jeans are a good starting point for basic flattering jeans but they're not the only things that can look good.
By all means experiment with different looks. Not sure the look you're going for, but i tuck jeans/trousers into sneaks and boots occasionally and it can work, but sometimes hard to make it look good and not affected. I've tried and failed with a few combos before finding some that work for me. That's cool you're thinking in terms of entire concepts like that, which a lot of newer posters fail to do. The look you described sounds a bit too much like some of the korean yestyle/zipia photoshoots i've seen, but i'd be curious to see your take on it. Whenever you assemble something and get the confidence to post, throw it up in waywt thread