Check out the Vienna Acoustics owners thread. There are posts with pictures of someone who packaged speakers for shipping. They were large VA towers too like your RF5's. His posts weren't too long ago - pretty recent. You should have no trouble finding them and I am sure there is info in his posts that will be of use to you. Good luck..
Marantz PM15S2 LE, Oppo BDP-103, Simaudio Moon 100D DAC
VPI Traveler V2 with an Ortofon Rondo Blue and Simaudio Moon 110LP, Technics SL-1400 with an Audio Technica AT-14sa and Pro-ject Phono Box S
Dynaudio Focus 260's, Rel T-1 and a Panasonic TC-P54S1.