I understand how to find the expenses of a deal, but how do you know what to put in for the purchaser specific details, (rate, points, down payment, term).

A detailed forensic study with a full 32 division building code tax asset detail will generally cost a bit more than a modeling or sampling study that isn't as accurate or detailed.

Ayo:There isn't enough information here to provide a detailed assessment but here are some general thoughts.If you are buying-in to an LLC, you are buying into its history. 

At BP, we can pick and choose how and when we answer and how long and detailed our answers are.

As far as which are best, there are tiers of software based on price, quality, and available features, but truly the best real estate software will be one that is tailored to your business, and that you'll actually use.

@Tanya Lechner thank you so much for extending a hand, if you don't mind would you please PM me with the details so we can coordinate something? 

They'll also be able to help you determine reasonable compensation (an important aspect of S-Corps), and also help you with the cost breakouts of the sale.Please note that I don't know every detail of your situation, so the strategy I mentioned may not completely apply to you.

We have not sat down yet to iron out details, but she has expressed either just renting, or rent to buy.

My apologies for the extensive intro, I do enjoy typing and I'm a very detail oriented person (yikes).

I'm sure its like anything, the devil is in the details.