Oh geez, I hate to admit this but we moved out of our apt. 10 months ago and some of our stuff is STILL not unpacked!! To our defense, we have zero shelving and very little storage. However we just need to break down and buy some bookshelves! Most of the stuff still packed away is books, games, etc. but it's taken over our downstairs office/guest bedroom.
Doing everything little by little is a great idea. We had a major fiasco when we moved. They put off closing for 8 months! Eventually we HAD to move out of our place by Jan. 2nd. That meant skipping out on any NYE celebrations and instead staying up all night packing and fixing all the little things we had messed up. After that we had to put our stuff in storage and stay in a hotel for a week. Somehow we pulled through tho. I think that's the biggest thing is to keep up momentum by focusing on the new place and how amazing it's going to be.
Best of luck, you guys are gonna do great!