My experience with New Mexico is that it is a stunning beautiful place aside from Albuqueque. Some long johns and a pair of gloves and it's a great place for photography. Right now the cat isn't sitting in the window, she is curled up under the electric blanket.
The beutlers is definitely worth working with since it is a very inexpensive developer and gives a very noticable increase in sharpness. The increase in sharpness is somewhat dependent on using the developer as a compensating developer. Don't over process and don't over agitate.