I had a similar job, but that log will be HEAVY!
Minimize the time it spends laying it its side, and you should be ok. When you get the log to the site where it will spend the winter, cut the bottom off, so that there's only a small entrance, much like our hives, and put the log on a bottom board. Then you can cut the top off to expose the comb, and nail a piece of plywood the size of a super to the top, with a hole in the middle, about the size of the hole inside. You can then put a box on top with comb, honey, or whatever you think they might need...you can even put a feeder on top of that box if you want.
In the spring, since the bees will be up high in the log, you can remove a good portion of the bottom, and add supers to the top to give the bees room to do most of their work. As long as there are frames in the hive that can be removed to inspect for disease, the combs in the log won't be an issue (according to my state bee inspector). I intend to keep the log hive as is, with just some supers on top to comply with the law.