Anything that is on your credit report and what you state on your mortgage app. Basically all your bills, expenses. etc.
It is recommened to get a car loan after 30 days of moving in to a new home ( closed escrow ). Also all the big screen TV's and other toys need to wait untill you got the house.
After you move in-- it get's much easier cause you don't care much about you FICO untill you decide to buy another house!
\LOL
good luck.