The most suitable lens of your kit is the one that took the best/most promising images when you scouted the rail road track location beforehand.
The first image has an interesting background with buildings and a bridge in addition to the railroad. It adds to the image. A wider lens can include more of the background and the surroundings.
The second one only has the rail road in it. The surroundings aren't particularly interesting. A longer lens sells the effect of her walking down the very long rail road track better than a wider lens.
As you can see "on location" quite unsurprisingly depends on the location.
Visit the location a few days earlier to check if there's something like a bridge or if it's mostly just railroad. I guess you know the location and you have probably seen it several times before, but have you seen it through the lens?
Scouting the location twice can make sense if you visit it at different times of the day, with the sun at different positions throwing different shadows.
Even if you lived next to these tracks for a couple of years, go out there with your camera and lenses to see what works and what does not.
Just some thoughts on the images you posted (not sure if this should be a comment):
- It is technically well made, but the angle makes me feel
like everything falls over (to the left). The angles on the left
make it a very dynamic scene, but the intimate moment on the right
doesn't tell the same story. It doesn't quite work for me.
- If she looked back at the camera, it would turn this good image into a great image.
- The electric guitar doesn't make too much sense. The dark top corners are distracting. And the face expression is...er, is there an expression at all? Worst picture of the 3.