I completed my pokedex the last 2 weeks and i had my hardest time finding a spiritomb by Rock Smashing. All other Mons were relativly easy, especially with Expert Lure Usage. I suggest to do the Phenos as fast as possible, since u might be waiting on them the most. Honey Tree Pokes also take 1 hr. Besides that, it is a fun journey to do (atleast for me)