STR Proforma / Analysis with HELOC as downpayment financing

[David Heyburn]

Does anyone have an STR Analysis/Proforma spreadsheet that not only has the mortgage for the rental property as part of the expenses structure but also includes a 2nd mortgage (HELOC) which may be used as the cash for downpayment incorporated into the analysis? HELOC's typically use simple interest as opposed to an amortization schedule, and as I'm considering leveraging a HELOC on my primary residence to buy an investment property for STR, I want to factor that into my cost structures.

TIA.