Okay, so I waited until the last minute to ask this question

If I take either Hwy 84 or Hwy 285 from I40, what terrain will I find? Is one going to be easier for me in a 40-foot DP with toad? Should I just go to Albuquerque and access Hwy 25 that way? I am not completely confident on steep downslopes, so it will help to know what's ahead.