I would look at the DSCR loan as the first option.By the way, I suspect you are going to be disappointed by any refi appraisals   ADUs typically appraise poorly   JADUs can lower the property value Vs having the space as part of the primary unit.  

Trying to do my due diligence and research reviews on them before making this expense.  

FHA How did you add value to the deal?

A high property tax rate will increase the taxes more quickly as a percentage of total expenses when the property value increases.

Typically, I run a current income/expense column next to a ProForma column to show potential value add opporunties.I agree with @Robert. 

Review Form 1065 yourself and decide whether you want to tackle it.The real dilemma here is that hiring a tax pro will definitely cost you, while it is unlikely to save you much (if anything).

Personal money How did you add value to the deal?

I know it's a balance of reality, values, and what makes one happy that guide our decisions.

that we’ve learned in our 24 years, managing almost 700 doors across the Metro Detroit area, including almost 100 S8 leases:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+ (roughly 5% probability of default), zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680 (around 10% probability of default), some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.

Do they have any reviews?