Off the top of my head, if I were doing this, what I would do to help me "see" the perspective of the photo, is to take the photo into an image editor (photoshop, psp, gimp, etc.) and I would place one white layer over the photo with an opacity of say, 80% and then create another layer over those two on which I would start marking the corners of the buildings and connecting the dots AND extending those lines outward in all directions.

Attached is a (uncomplete) example of what I mean. I drew just a few lines.

Take that edited photo in Bryce and I would start taking cubes and make them fit in there and look appropriate. The cubes would be representations of the 3D buildings which can be switched out later as could the photo. (I would also try use cubes that had a grid pattern on them to hopefully, more easily see the perspective matching)

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