I don't think it's much of an issue to buy, as long as you know what you're getting yourself into.
First off - How are you coming to the 1011% COC return? How much are you factoring in to your CAPEX considering these homes are older, you may have increased vacancy due to turnover/evictions, etc. If it's vacant, and you due your due diligence when identifying the right tenant, you can hedge yourself a little. I just want you be be confident with that COC number since there are a lot of items that need to be addressed in these older homes.
Management - not against management at all, just do your homework when selecting the right PM. I self manage 5 SFH's from out of state (NJ) and don't necessarily have any issues. I have great tenants in place, address maintenance requests promptly to 1. keep the tenants happy and 2. keep my properties up to date. It does require some work, however I'm able to manage it remotely but just calling the right people.