I did this only a few years ago. Went about middle of the road on appliances. Those are things, sure you can say you will replace or upgrade down the road, but we all know you NEVER will unless they break. So I went maybe a little under the middle of the road, shopped for a few months to snag the absolute best prices and used as many coupons and Lowe's movers percentage off coupons as I could. Snagged some good priced and highly recommended Samsung front loaders.
It's really all about shopping around ALOT, you will be amazed how many good deals on scratch n dent or old-stock merchandise you can find for next to nothing.
Got two black leather couches with 4x recliners built in (total) for $300 brand new. Only problem was a small tear near the bottom front that was about the size of... well smaller than a dime.
Cheap bed set at Big Lots. Cheap bathroom supplies at Wal-Mart and Kohl's. The one thing I did splurge a little bit on was lighting. I replaced about 80% of the lighting fixtures in the house as they were all just too old school or retro, or the ceiling fans were too unstable to turn on. This, once again, is something you can say you will replace when you get a bit more money, but it rarely happens. Due to the fact that it's not an essential (your old cheaper stuff would still work), and the work and labor that is involved in replacing light fixtures or moving appliances in and out of the house.
The only thing I have really done since moving in that I didn't do before I moved in was upgrade the furnishings in my master bathroom. Ripped up the linoleum, took out the old sink and cabinetry, and put in much nicer (and not stained) tile flooring and a more modern sink and cabinet.
Next stop is the guest bathroom, replacing a bit of flooring, and putting in a nice big bar in place of where the dining room table would be (hey I'm a young bachelor, what good do I have for a kitchen table?).