Looking for some advise if it is right choice to additional capital to this investmentHere is how I look at a capital call.

I can give some additional feedback in the coming weeks. 

However, just because I don't agree with it doesn't mean I am in favor of the Government being given additional power to enforce additional laws and restrictions that infringe upon our freedom.

A less then full investigation may result in one thinking that the house and or the house and tennis court lots were what was being sold.As I later found out, a newbie tax lien investor thought they were getting a great bargain by outbidding other misinformed investors and paying the back taxes, legal fees, and an additional $34,000 (overage) which the county forwarded to me.  

I've been informed that completing the course alone may not be sufficient to pass the exam, so I’m seeking advice on how to prepare effectively once I complete it.Currently, my only other resources include a YouTube video, five practice exams, and a textbook.If you have any additional suggestions—whether online or in-person, paid or free—that could help me effectively prepare for the exam, I would greatly appreciate them.

But this comes with pockets of C/D neighborhoods, and higher potential for headaches;  in addition, appreciation in these zips has probably maxed out for a while.

I don't have the 10% for the down but thinking of using a HELOC to get the money and then add it into the calculator.

In addition to rent, you can setup late fees and other fees to be collected. 

Then they'll charge an additional $2,400 for filing tax returns. 

Do they value nicer finishes and design or is that additional cost lost on the typical tenant in that pocket?