An FHA loan or conventional would be a good loan product and can use the existing rents to help qualify. 

For my strategy there is a lot more to it, as well as my own limitations on conventional loans. 

@Adrian Lammersdorf-Scioll you can use a standard LTR lease, you just need to add an Inventory Checklist to it.

As many of us dominantly working with this inventory, have seen those things be "grandfathered in". 

Where I live just running numbers on the MLS there isn't a lot of inventory of multifamily for sale on the MLS it seems like landlords trying to sell their properties in my area have them overpriced.I'm from Kansas curious what you guys are getting or if you have to look elsewhere besides the MLS.

I will assume Ludlow has similar seasonal activity as Stowe, if so , the summers are busier than conventional wisdom would say.

The one thing about this market is its best to buy land and build new, there is not alot of on market inventory.

Then I would consider refinancing your first property into a DSCR or conventional loan if you are stuck. 

If your neighborhood doesn't have a lot of comps (normal right now, with the lack of inventory), you'll want to look at historical data.

All conventional appraisal's submitted are logged in that data.