That said, I would if I could my man! Sadly, the Yoshinkan dojo (well... only Yoshinkan dojo within 1 hour distance from me) I plan on starting in, is closed for the summer, and starts again September. I'm looking forward to bouncing around looking at different styles and Dojo's in Tokyo, when I head there again in August, which I suppose in the end will end up deciding which is for me.
Doesn't matter, get on the mat at any dojo. If you only have that small amount of time you can start learning ukemi at the very least. That way you will be able to skip the awkward crappy rolling phase once you find a dojo you want to train at in Tokyo! Take care and good luck to you.