Playing RPGs in a language your can't comprehend is pretty dumb IMF. They are story based games. I don't get the "hardcore" crowd's fascination with playing Japanese RPGs. I find the trail and error BS beyond chore-like.
Best Famicom games to get if you only speak English:
Crisis Force (very overlooked Konami shooter)
Akumajou Densetsu (Castlevania III with much better sound)
Arkanoid II