These are professionals with additional training and a stricter code of ethics.

The principles are universal, inventory is local and networking.

To clarify, Going forward, the HELCO interest is NOT deductible after 2018 unless you use the fund to substantially improve your main or second principle home.

Just from an ethical standpoint, I'm sure you contract has outs for you, you should let the seller out if they really want to. 

One of the investments finally paid out and return the principle with over 10% ROI (more than the projected 10%).

It’s reasonable if the tenants saw them they assumed they worked or even if you said they were broken that they would be fixed.With having nothing in the lease and hopefully having the desire to be an ethical person In my opinion you should fix them or replace them.

I am not an accountant but my understanding is that when you sell on contract you recognize any gain as the principle is paid down so this spreads things over several years.  

The first thing you do is anticipate what the max impact is if the interest hits the max, and prepare for that when you buy the property.Since that ship has sailed, one option is to pay down the principle, but that defeats the purpose of cash flow.You say all your loans are commercial, and they have to be for some reason. 

With my work ethic and personal wit, after all said and done, without to much explanation here, I think I could do amazing in this field and I love the grand picture of the profession.

Tenants are paying principle of $1272 a month (15K a year).