College Student - 4 or 5 BR?/ / Rental Advice

[Garret Hohn]

Hey everyone! I'm a 22 year college student trying to get my first deal. Before I get to my question, I would like to provide some background information. I start my senior semester in late August and I need to a place to live. I plan to buy a house, rent it out, and live in it for free. I'm looking to create sweat equity and sell when I graduate (unless it cash flows an adequate amount). A family member will be funding my deal since the local banks were not willing to lend to a college kid, understandingly, which was an awesome break for me. I for sure have one friend from school that will be renting from me. I live in a town of about 75,000 people (Rapid City, SD) and the area just created a new air force base, which bring in over 2000 families. So the market will likely stay strong for the next year. 

Now for my question. I wondering if I should look at houses with 4 or 5 bedrooms? I ask this because how likely will I get 3 random tenants that would live with 2 college kids and other random roommates. For those of you who have house hacked and rented out your bedrooms, did you run into issues with this? Or maybe even a 3BR and just rent out to my friend and one random tenant. I'm just having a hard time deciding what would be my best option and narrowing my focus, as I only have 1.5 months to find a deal. Any advice will be greatly appreciated!