I also started this batch for the first 4 days at 64*. I did that with my last batch and it was super clean. I just bumped it up to 66* and in a week or so go up to 70 ish to finish and clean up. Then dry hop for a week and cold crash before kegging..
that about what I do, when you cold crash the krausen will drop
after four days I go to 68 to finish then cold crash at 33 degrees the then keg
if I am dry hopping an APA/IPA or whatever I do it in the keg
but in the end it is what works for you and gives you the beer you are looking for
I do mostly ales and have then in the keg in about 12 days
all the best