Adding your $100k renovation estimate into the equation, you're looking at $379900 plus closing costs. Given that, your rents barely break the 1% rent to purchase price threshold. If that's normal for your area, then it might not be too bad.
Considering a renovation that size would take 3 months at least, it'd be that long before you're able to start cash flowing (CF). That old of a property, it'd also be good to make sure there aren't any historic implications to your rehab. If the local historical society has any say/leverage on construction requirements, it could certainly eat into any potential CF/profit.
Other than that, my rudimentary numbers indicate a potential 8.69% cap rate and a 6.93% cash on cash return (CCR); assuming 10% property management & maintenance allowances. All that said, I think your decision comes down to answering three questions:
1. Are those kinds of numbers appealing to you? CCR is too low for my taste.
2. Are you willing and able to dive that deeply into rehabbing your first purchase?
3. Are you able to carry the costs while under construction?
This is my perspective as a fellow newbie investor and I hope it helps.