Hi, I just bought my first unit as well, and I do advise you to GET your keys first before buying or even bookng all your listed items. And trust me, there are a lot more moving costs to be considered other than furnitures and appliances.
sales/promotions/etc will always be there. When i moved in, i just bought my stuffs little by little as I'm on a very tight budget as well.
Once I kumpul enough money, i'll buy 1 item. Give me more excuse to go shopping even more...lol... Just buy whatever necessary first if you don't have a lot of budget, then slow slow shop for the rest.

good luck!