Gustavus Adolphus (about 2100 undergrads in MN) is another school you may want to check out, and if the NPC works out, is likely to be a safety for you. Also up in MN is U. of Minnesota-Morris, the state’s public liberal arts college with a 9:1 student/faculty ratio.
If you’re looking for a reach that’s closer to home, Grinnell in Iowa could be a very strong contender.
For something that might be more akin to a “target” in the northeast you might want to consider Skidmore in New York.