Buy the biggest fridge you can fit in the space. Don't cheap on it, buy large.
The older the house the more likely unforeseen expenses WILL pop up, from burst pipes to furnace to roof.
DO NOT buy a house that is susceptible to water. Get one on a hill (it can even be a very small one), and properly graded. Water flowing toward a home's foundation is the number one cause of foundational problems and brutally expensive. On the plus, if you get an old house and its foundation is good, it will stay good as long as you don't do anything to it to upset the balance (e.g. messing up the grading).
If you remember nothing else make sure you remember about the grading. I have people in my immediate neighborhood who have had to move out of their house in one case due to a severe foundation issue, and others who's sump pumps are running damn near all the time, simply because of grading. They do live on hills, but the water run off from the neighbor's house after enough years causes problems. Tons of houses on the market have these issues, just tons, and inspectors don't seem to mention it much. Finding out you need to drop $8k on having part of your yard dug out next to the house and drainage installed and regraded isn't fun.