I don't know which dates to apply for

I'm debating between both Tokyo and osaka at the beginning of october, the ones at nagoya or wait until the rest of the dates are announced which probably will include Tokyo again, that would be quite risky though...
edit: omg, I just found I can't apply for tickets because the address I thought I changed before 29th July is still wrong. I'm freaking out, this has been the worst week of my life.