I'd like to start with flushing every few years and replacing the anode rod every 5 years or just once with one of these powered rods.I am skeptical of the very positive product reviews since the review really needs to be submitted 10+ years after the installation to be meaningful and they never are.

Just because you don't make any money on them, doesn't mean you aren't responsible, along with the source of the actual plans, for any mistakes in the plans, or even any mistakes in construction from lack of info, misunderstanding, or just plain stupidity of the builder/user of the plans.The licensing agreement will have guidance on having plans adjusted for local code, reviewed by architect/engineer etc. 

You will want to look out for a lender that is responsive, straightforward and has a track record of reviews and closings.

It takes 5 minutes, at most, per property then I have a report I can review and share.

I manage my out of state partners rehabs.......I would find an unbiased person to at least go behind the PM to verify everything

You're essentially reviewing homes, and showing the host what they need to doo to keep standards up without the title of being the home manager. 

A financial planner will look at your complete financial picture, provide unbiased advice on your current situation and help you map out a plan to reach your goals. 

They declined my application after a week of review, citing that "Non-retirement accounts cannot hold retirement funds".Can you please let me know your suggestion here?

What do you find is the most effective way to ensure guests leave a review and hopefully a good one?

So I've been doing my own taxes in Turbotax for 20 years now (I only own 2 rental properties but both were BRRRs), and I finally got stuck on something and went to a CPA 2 years ago, and he reviewed my past 5 years of returns and pointed out that I had made multiple mistakes (incorrectly categorizing repairs vs capex, calculating basis and therefore depreciation wrong, failing to realize that certain expenses for a home converted to a rental property start being deductible the day the property was placed in service vs actually occupied, the list goes on).