Approach them with properties in mind, having done all the work already, and lay out exactly what this investment looks like. 

I obviously could lay out the difference to bring the LTV down but I'd rather not.

Watch out for lease language that imposes a stiff penalty for breaking the lease.Your best approach is to go in with full honesty, lay out your full business plan, and show the potential additional profits a landlord can make.

A great loan officer will not look at the deal in any way except from the standpoint of this is what must be done to qualify for the purchase, lay out the game plan for you and then execute the game plan. 

Aside from the fact that it is in a small town, it is also a rather interested layout.

It's hard to say without knowing more details of the actual unit (layout, square feet, bathrooms, who pays utils, heating/cooling setup, broker fee if any, etc.).  

I'm looking at a couple layouts that have convertible living room spaces that turn into a second sleeping space. 

Not all NNN deals are the same and people sometimes confuse a NNN deal with a credit tenant deals.I have experience in both if you can lay out your goals I can highlight the differences.

"These properties also rent more quickly, as they usually have modern layouts and an adequate count of bedrooms and bathrooms."

I just rented a unit in under two weeks while a near identical layout unit (with old appliances, carpet, round toilet, and plastic handles) in a sister building just across the street is still on the market and approaching 3 months vacant.