Schott703, your method will get pretty close I believe if your ABV is at least 10%. I don't know what kind of freezer you have, but mine hardly gets one gallon icy enough to separate in three days. I guess this is going to be a YMMV kind of thing depending on what your freezer is set at, how full it is, etc., If you are new at making hard cider to be "jacked" I recommend you start out with a 1 gallon batch and go from there. If you over freeze it, take it out of the freezer and let it thaw completely, and then re freeze it, and try again. A 1 gallon batch of 10% ABV hard cider will make 8 oz of very high proof cider, and, of course, how high proof you want your final product to be, is all upon your personal taste.