Thanks everyone for reading my post. I actually considered letting my visa lapse, but didn't want to go through the hassle of applying for the visa again. Actually, I didn't want my family in Japan to go through the hassle of getting the necessary paperwork (i.e. koseki tohon, juminhyo) to reapply for the visa.
I'll be able to link my ARC info to my uncle's house so that shouldn't be a problem. I have a Child of a Japanese National visa, so hopefully, I won't need to list an employer on the application (at least for my initial application).
I guess I should wait 2 weeks to get my ARC and have a little fun in Japan while I'm there. I'm in need of a vacation anyways