I know that interest on the acquisition loan can be included in the cost basis since it’s inventory.

The easiest solution to combine your two Stessa accounts would be for you to add the email address you have associated with BiggerPockets as a collaborator to your already active Stessa account.Then log in with your BiggerPockets credentials (as that collaborator) and it should upgrade your Stessa account.Here are some easy steps to follow: https://support.stessa.com/en/articles/2105533-the-power-of-portfolio-collaboratorsIf this does not work, please message [email protected] and we can work with Stessa directly to get you set up.

The reason why I ask is because that could determine what loan options are available to you (and interest rates). 

Combine your interests!  

If you pay down $100K in loan saving you $1K in monthly costs against rental income, or you invest that $100K in something that generates $1K in net income the result is similar.

I've also used traditional loans through regional banks and a few SBA loans. 

Great tools that get updated regularly.I am on the lending side of things and would be happy to hop on a call with you anytime to discuss financial strategies and help answer any questions you may have about nearly any loan product available to help you on your journey, even if they are not products my capital partners offer.We are all here to help you learn and grow.

Possibly using mortgage/home equity loan on one unit we own to buy an extra one.3.

For context, I will be assuming his VA loan at 5.1% and he will be doing seller financing for the remaining equity and sale price. 

I was just thinking today there was all this excitement about VA loan assumptions there for a while when interest rates started going up.