I need help on the lending side for this potential deal...I am negotiating a purchase agreement with a seller carryback of 20-30% as a second-lien position. 

There are a few basic questions to consider when considering a potential deal: * What is your purpose ("why") for purchasing this?

@Basit SiddiqiAgree for example would you rather have 13% net but deal levered 75% or a deal no levered at 8% net.On a 100k investment I would take the 8% deal every day as I will gladly pay an extra $5,000 to reduce my risk substantially since in option 1 the deal can go to zero in option 2 realistically it would be really poor management if it lost more than 10-15% of your capital.

If you have this extremely valuable experience already under your belt owning 2 properties, why dish out a potential down payment for property number 3 over to a mentor or coach?

Instead, a lender will want to see that the property currently brings in (or has the potential to based on market rents) enough to cover the monthly principal, interest, taxes, insurance and HOA (if applicable).

One thing I would advise is that by having skin in the game, you always risk things turning sour.

I understand the significance of key metrics such as IRR and CoC in evaluating the potential of a deal, but the abundance of information out there is making it challenging to find a straightforward, user-friendly solution.What I seek is a singular, comprehensive tool—a master template, if you will—that I can consistently rely on from deal to deal.

And if they aren't, it will reflect in rates going much higher for the risk.

Getting this information online will result in guesses, making risk in this situation.Good Luck!

The upside:  There is a lot of money to be made, potentially, and every door you add to your portfolio builds your company's value bigger and bigger (vs. sales, where it's a transaction and then it's over).