not familiar with that yeast, but being dry, you may get some esters in there at 70. i don't know for this yeast, just a rule of thumb i use for dry (when i use them). I would say if you can get a tub large enough submerse at least 3/4 way up your fermentor, it would be best to try to keep at 65ish. remember the temp inside your fermentor will be higher than the ambient temp because of the metabolic processes taking place.
