Buying an living in a house where tenants pay morgage

[Logan J.]

Afternoon everyone, 

This is my first post in the community! I wanted to know if my plan was feasible. 

A little about me: I am an nontraditional undergrad student at the state school here about to finish my degree. I work full time as well so I have a steady income, enough to help me save for a house. The only thing that is holding me back from buying a property is because when I graduate in 10 months I don't know if I'll be hired by a company outside of town or even Texas. I've heard it is ill advised to buy when you plan on moving shortly after but If it comes to it, I'll just buy and hold and have a management company take over the property. That's all besides the point.

I am currently saving for a down payment on a house or duplex in San Antonio, Texas. Target cost of the house is going to be 100-125k. I will be saving for 20% of the cost of house to avoid PMI, 20-25K. The average room for rent in San Antonio are roughly $400-$500 depending on location. Using the Zillow mortgage calculator, my mortgage would come out to be $650 a month not including any other miscellaneous expenses.

http://www.zillow.com/mortgage/calculator/payment/...

The full breakout is as follows:

Expenses per month:

• $458 - Property and Interest
• $125 - Taxes
• $67 - Insurance
• $105 - Maintenance and Repairs (Based on 1% rule)
• $25 - Advertising for tenants ($300 a year on the high end)
• $128 - Electric  (rough estimate)
• $30 - Water (rough estimate)
• $70 - Google fiber

Total Exp.: $1008

This is an extremely rough draft but I feel like I've covered a handful of expenses with over estimating advertising costs to find a tenant. 

With total expenses at $1008, I would have to rent at $500 to break even. This is all contingent upon if the house I buy is at most $125k. How does it all look, are there other things I need to consider when looking at this purchase as a business investment? Any tips or advice would be greatly appreciated! 

Thanks!