Hey Sunny, I am a local investor in Birmingham, however I would ask a more general question about investing in a townhouse. Investing in town homes have the following downsides in my mind.
1. They are less liquid investments (there is not a deep investor base for town homes). I know that you are holding for the long-term, but liquidity is always, always important
2. You are subject to HOA fees and special assessments that are out of your control. Ever been stung by a 5K special assessment because of something that is not related to your property? It happens all the time with townhomes and condos.
3. You are subject to potential issues with neighbors.
4. You are also subject to potential rules and restrictions that the HOA may impose
5. Local property mgrs are not experienced with managing town home rentals like they are with SFRs.
Overall, as someone investing from out of state, I wouldn't recommend the town home option. Just my opinion. Best of luck.
Chad