For added liability protection, consider setting up an LLC for the rental, though this may have limited impact if the mortgage is in your name.This post does not create a CPA-Client relationship.

My problem is how to measure if it has any impact on sales price or time on market. 

I realize I am not cut out for the entire REI process of consistently finding multiple properties for particular exit strategies. 

my condolences on your recent lost.there are a few ways you can do this, as mentioned above you can take a heloc on your primary residence which will give you a second mortgage, first mortgage payment wont be impacted. you can do cash out refinance which will give you one mortgage and payment. it will pay the old mortgage and give you money in your pocket to pay for the rehab.or you can do a renovation refinance which is similar to cash out refinance but we would contractor involved  as part of the refinancing and they are paid through the loan

Multiple people bid on that property as well. 

Beyond immediate safety concerns, the long-term financial implications, including taxes, are a pressing issue for those impacted by the disaster.

This allows you to use all of the tax and deferred depreciation recapture to purchase the larger MF propertyA consolidation exchange is where you sell multiple investment properties to purchase a larger and nicer investment property, but you also get the benefit of using all of the tax you would have had to pay to your advantage.

At one point years ago, I toyed with the idea of owning giant apartment complexes in multiple cities.

@Jay Fayz for SFR (1-4 family) Classifications are mostly opinion-based.Not aware of anyone tracking eviction rates, except Evictions Lab nonprofit that doesn't like landlords.Here's some info that might helpt:---------------------------------------------------------------------------------------------------Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

This could impact your leverage / DSCR.