Be sure to apply for property tax abatement through City of Richmond. It will dramatically increase your cash flow. Go to the Assessor's office website and pull the form. Basically, you pay $125, they come out before rehab and appraise it, then come out after rehab and appraise it... and for 10 years your property tax basis is frozen at the pre-rehab assessment.
I have a property of E Broad Rock that I am in the process of BRRRing. I probably overpaid a little bit, but not that much and my numbers are similar.
I would count on more money for CapEx if it's long term. For properties in this neighborhood and at this price level, I usually use 17-20% (about $160/month). If you do the math on these things, it works out to a lot more than 10% cap-ex. Capex as a percentage of sub $60k properties is a higher percentage than on more expensive ones.
I've had good luck with Section 8 tenants so far. And with many lower level jobs automating (see the Southside McDonalds) the lower income tenants are at risk of losing their income.