So, in your considerations, I would park right there for a bit and determine how this would look for you.Since you have about 2.5 years to think about it before you would need to spring into action to take advantage of the rollover for tax advantages, maybe you try on a rental and see how it fits. 

That had even a passing resemblance to tax returns or financial statements4.

I also suspect inflation will drive continued migration to lower cost of living / lower tax states.  

.: What is the average conversion rate for cold calling using software like PropStream, specifically targeting probate, foreclosure, or tax delinquency leads?

Maintain - includes taxes and insurance?

@Emily Gowen so as you pointed out you would not have to do a 1031 exchange on your current home to avoid the capital gains tax and coupled with what Dave Foster pointed out I think, speaking from experience you would have a high likelihood of success. 

Some are owned by my ROTH IRA and are making tax free cashflow.

It would/could be only 15% capital gains tax and yes you could/would deduct all selling costs including commissions and transfer taxes.

Said it was one of his tax clients & would not give me their name.

In some cases interest paid on the HELOC can be tax deductible if the funds are used for home improvements.Best of luck from Fort Worth!