I am using Safale US-05 for an IPA recipe. I am currently at 72.8 or so while the recipe calls for 66 for days 1-2, and then 69. I do not have a temperature controller/freezer yet. My only option is to put the carboy in an unused bathroom, and put a room air conditioner in the window. Is it worth the effort for ~5 degrees cooler for this yeast?