So now I feel comfortable the property's ARV to be at least 90-91kOn the pay sites call up and ask for a two day trial, most will let you have it.

These tips are the learned result of my own years of trial and error – I didn’t have a mentor.

Trial and error?

@Mark Weinmann consider yourself lucky. a lots of newbies had to pay a lot for trial and errors because they have to figure out the map themselves instead of being held by a mentor.

I’m saving a lot of money and I’m learning via trial and error.

You are welcome.... those tips are a result of Trial and Terror and years in the field making mistakes, but not repeating them. 

There's a huge variation of services for such homes.

Note that in listsource you'll find two variations and the details are further complicated based on which one you select:For the "Original Loan To Value" criteria, it is just as you suggest - simple math, at least for purchase money loans. 

Currently I'm paying for "REIPRO" and I'm in a free trial with "REALEFLOW"and I've only poked around in "FREEDOMSOFT"So my focus at this present moment is to master wholesaling, so I need a system that I can:- Pull different leads.

Some programs have free trials too, so you can always test them out first to see if they meet your needs.