An update on my ultimate dark mono:
-After what feels like ages, I got Eevee.
-Since the next gym to challenge is Ecruteak, much grinding is needed. I wish eevees learned bite a bit earlier... ah well.
-I skipped most of the avoidable trainers earlier in my journey, so now I can go back to fight them with Eevee, raising exp and happiness!
Next update will hopefully be soon.