Just a couple of additional observations that you may want to consider:
1. I highly recommend the use of only the 'genuine' Amphenol right-angle elbow. Amphenol uses a male/female screw connection at the right-angle point so the center pin connection is reliable. By contrast, most imported right-angle adaptors use a metal fork-to-pin contact method at the elbow point so there is a possibly of intermittency over time. Given the small price differential, the Amphenol connector is a better bet.
2. I use a lot of LMR-600 and you will want to note the absolute minimum bend radius specification, if you choose that direction, so that you don't get creepage of the center conductor into the insulating foam over time.