The high-strung/Nashville tuned guitar

Go to page 10 of this pdf to read an article I wrote for Taylor Guitar's Wood and Steel magazine about high-strung guitars.

Here's a Larrivee Parlor guitar - Larrivee P-03 Parlor - Used

This string set you can break up into two sets, one normal, one high strung -
Elixir Strings Acoustic Guitar Strings, 12-String, Light NANOWEB Coating
or
Elixir 11150 Elixir Poly Acous 12-Stg Lite