So I find myself possibly over-analyzing the property itself (buying the note not the property), the specific state and judicial vs non-judicial, the market of the neighborhood (appreciating, hot vs cold), and even the particulars of the borrower.

Also, Searching for great lender that’s familiar with these loans since I have read they can be complicated.

They are essentially an extra layer over whatever you use for your properties, and they do not reduce or increase your taxes.You're not asking tough questions yet, you're asking very basic questions that sound complicated because they are out of context.

@Dj JacobsI don't know much to anything about how the land trust may complicate the tax situation. 

The likelihood of three or four investors being (and remaining) in sync long enough to tackle a major rehab project is alarmingly low.Pooled funds often introduce more complications than they resolve.

I had a tax lien in Arizona that I took through the judicial foreclosure process and now have deed to.

Whether or not that contract will accurately reflect your deal depends on how complicated your deal is.

In this case, if you leave the profits in the C Corp, there is no double taxation and it’s potentially taxed at a lower rate than your ordinary income.Obviously, as you progress through that para it becomes more complicated and costly.

This is going to be complicated. 

Your why + excellent education and deep network of experienced folks you have a chance at making a new complicated asset like an active business work for you.Best of luck.