Yes, resist the urge to name a price first - other than what the comps for the area are.

(I can hear the roar of the crowd and thunderous round of applause lol :-) I am taking the path of least resistance by looking at house hacking a 4 unit property with an FHA ..

If your business was not pandemic resistant and you got wiped out that is just plain bad luck. 

In 2018 Baltimore County is requiring carbon monoxide alarms / detectors to be:hardwired with a secondary battery backup (similar to smoke detector requirements in Balt County now)battery must be sealed, tamper resistant, and must last for a minimum of 10 yearsconnected to an on-site control unit that monitors the carbon monoxide alarm remotely so that a responsible party is alerted when the device activates the alarm signal and receives its primary power from a battery or the control unit(Ref: Baltimore County Notice with details)The one in bold specifically concerns me.

The walls are a similar story but since the drywall (not mold/mildew resistant) from a previous remodel was jenky, they just paneled right over it.

Regarding the screen, recommend any types that are corrosion resistant? 

The exposed aggregate or "honey­ combing" within the concrete is indicative of a "cold­ joint".Without reinforcing steel, the wall was not able to resist the high lateral loads associated with the expansive clay soils, especially saturated soils, prevalent in this area.While not in danger of impending structural failure, this wall should be reinforced, probably with a "Strong-back" system to help maintain structural integrity.

Start with the path of lease resistance.  

Sounds like you handled it appropriately.If you get or expect resistance to moving out you could offer them something to help with moving expenses.

I do buy higher quality carpet (think durable and best wear-resistant and not pretty and fluffy) that looks decent and stands up to abuse.