My hope is that any negatives due to noise might be made up by the positives of sections 8 housing MILES AHEAD of what's currently on the market. 

Just make sure your offer has an inspection contingency, so you get to look in every unit before moving ahead.

If you use that cash to acquire another property or invest it someplace else, then odds are good you come out ahead with seller financing. 

Better to get ahead of it and deal with on your terms.

Once you've built up a significant client base, then you can go ahead and quit.

If you screen tenants and follow a guideline that you set up ahead of time and stick to it you shouldn't have issues with the tenants.

As of now, my plan is to build and rent, but before hand, I would want to plan ahead of time and forecast how it would work out.

You want to help your family, which is admirable, but short sighted.if they can't make the mortgage, they can't make the rent. if you can make the mortgage payment with no rent, then you should just go ahead and make their mortgage payment for them.

given his age I just went ahead and paid for it. 

Also wouldn't be opposed to the single family idea, If any of you feel you have some advice in that category.I want to buy and hold for rental income is my goal.Thanks ahead of time, any advice is much appreciated!!!