Any recommendations on a CPA who is familiar with taxes regarding hawaii real estate investments in addition to S-corp, LLCs, and backdoor roth contributions (i.e. properly filing form 8606)?  

That can be legally done under the correct situations.You made some serious mistakes in the purchase, that proper training would have prevented.Again, Subto is legal, when done legally and I am not saying you've done anything illegal.The real solution is to sell and pay off the loan.

Do you have the professionals you need to start an LLC, do the proper real estate/tax accounting, solid contractors to rehab or prepare the property, and a property manager to handle the day-to-day operations? 

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.

While not every mentor is a guaranteed path to success, proper vetting through referrals, review of a mentor’s track record, and alignment between the mentee and the mentor can shine some light on whether or not this relationship is a good fit.

However, with proper cash flowing properties, that would be well worth it in my opinion. 

Having proper software and systems3.

There are various other items that may come up such as: Proper firewall suppression, adequate entrances/exits for fire safety, stair safety, size of kitchen appliances, etc... for my specific example. 

I own 12-doors in Detroit proper.

You should not manufacture it retroactively for this year.GROUP 3: Tax strategies that are really for EOY considerationDelay receiving income into January.