Are you planning to visit Nagasaki as well??
No. Nagasaki is way the hell on the far West side of the island, over in Kyushu. In other words, its not near anything and takes a long time to get to. I actually worry a bit about the dialect as well, as some Kyushu dialects can be unintelligible to even native speakers. I'm not sure where they speak like that, but I know its somewhere in Kyushu.
I was also told that it's no where near as nice as Hiroshima in terms of monuments, so I decided to skip on it.