@Kyle Pepple Congrats on finding the property. Now is the time to do your due diligence. Prior to considering to add any appliances, you need to do some research as to who is a potential tenant for this property? Are the tenants short term AIRBNB, students, long term tenants that are single and don't cook, etc... Once you figure that out, consider how adding any sort of appliances will impact the size of each unit. You said they are already too small, will there be enough living space? It sounds like this building can be used as a rooming house. Is that common in the area? Is there a demand for it? After you're done with the research, run the numbers on the investments and reno you need to do and see whether it still makes sense to go for it.
Best of luck!