Frame out the wall and use plywood for the siding. 

did half the flip work, sold with new walls and new electric/plumbing.

Only wasted time and many prospective buyers in the mean time.

You will be required to get a foundation inspection report on top of an appraisal and you are required to pay for both.That is why I said make sure you do your research because if you pay for an appraisal or foundation inspection report and its not within guide lines you will have just wasted anywhere from $650 to $1000.00 non refundable.  

Install low profile LED lights or wall sconces.If this is an investment property you need to be thinking about returns.

Don't waste a lot of time analyzing.

I am an aspiring serial house hacker based in southern New Hampshire actively searching for my second small multifamily deal in the Nashua area, but I've hit a wall with inventory being so tight in my local market.

It's not to say I don't get sick and tired of stuff, but if it is worth it, I will continue to bang my head against the wall.

Stop hanging out with your deadbeat buddies who spend all day drinking, talking sports, and otherwise wasting away.

It's not fully closed as in drywall, it's sort of a faux wall on our side, but the tenant could open the door on his side and come through if he wanted.