I recently installed a Leupold VX-3i 4.5-14X40 CDS on my 300 RUM which I plan to use on a future elk hunt in Wyoming (possibly next year). My partner and I have 19 combined PP's and are considering about LE units 38 or 39. Before I order the 1 free CDS dial, what elevation and temperature designations (suggestions) should I consider for ordering this CDS dial? Only really plan on using this rifle in Wyoming or Idaho since there is really not much big game hunting here in Ca. Thx TD