What should I write into my BAH Exception to Policy letter?

I am PCSing to FLW next month. My husband is a recruiter in Illinois and that is the absolute closest Branch would get me. I called the housing office in FLW and was told that they had built geobach barracks. Lucky me..... when my husband moved to Illinois, he took nothing with him so I have all of our household goods in my possession, which, is 3 bedrooms and 2 bathroom worth of belongings, not including common areas and kitchen. I've already checked to see if there are any climate controlled storage units up there and there are none. I also have our 2 dogs and 2 cats. I plan on submitting an Exception to Policy once I am in-processed into my gaining unit. I just don't know what I should be writing on this memorandum. It's likely to not get approved but it's worth a shot. Any advice?