This is far from a cash vehicle. 

A warzone neighborhood is heavily crime riddled from home invasions, carjacking, to purse snatching, drug infestation, unkepted lawns, trashed streets, abandoned vehicles(which oddly enough Philadelphia local officials have taken a stand on those back in the 1990s and they are rarely seen at all today but the blight houses still exist heavily).

You are required to be an accredited investor with all of these vehicles. 

If you allow $5000 you will have a lot more potential investors available and be offering your fantastic investment vehicle to a lot more people that really could benefit from the opportunity.

In a situation such as yours, real estate being more of an income diversification or retirement vehicle, turn-key or minimum value-add would be the way to go.

It feels like a vehicle more for owners than renters.Which brings me last concern: if the cost is almost 4x SFH, this would seem to mandate partner involvement for many newish investors, in which case, why not just solo purchase duplex?

Vehicles in the lot were rusted and decrepit.This property is listed for 920k and probably isn't even truly for sale.

If you do not want to pull it out to reinvest in real state then pull it out and invest in some other vehicle that will not be effected by a real estate drop.

A house hack is taking the home you live in & turning it into an investment vehicle.

@John Hixon 529 plans are a good vehicle, but I think education will be the center of reform in the coming years and in the wake of such reform, many of these investment plans may see major changes - so today it is a great idea, but will a change in the rules erase some of the benefits the plan offers?