No investor worth his salt would sell an SFR that already cash flows.

I've never flipped a single home, or put together a business plan like you have so please take all my "advice" with a grain of salt, it's just my prospective on the situation..

I know how easy it is for future developments like that to fall through, so when I hear someone say "once that is built in 3 or 4 years" I always take it with a grain of salt.

I would most definitely spray foam the basement walls. 

However, I will say take it with a grain of salt.

I couldn't see any way moisture was gathering at those places, so we just wiped the area down with a bleach cleaning spray (a shoutout for satin finish paint on rental walls!!)

There is also advice I take with a grain of salt because I work a lot with investors, and that's very different than most of the business in my office.There were two thoughts that came to mind when I read your post.1) Look for a different brokerage.  

Cameron I'd take what Grant Cardone said with a grain of salt.

While you are at it just buy his direct neighbors some pepper spray and tazers as "good tenant gifts".

Common utilities could cost 200-300/month, if your goal is to hold a long time and cashflow, split utilities make a huge difference, I think for some reason most renters don't look at this in their process.Watch the neighbors - an attached building can cause you major headaches....if the building next door gets cockroaches they will come over into your building and you may have to let tenants out of leases, because spraying your building won't get rid of them, and getting access to the other building may not be easy....I guess I don't have to tell you where this example came from.