In the Spring I am planning on adding a 600 Sq Ft Master Bedroom Suite
to my New Jersey Ranch House. Nothing too fancy, BedRoom, Sitting Area
& Full Bath. It will sit over a crawlspace and be conventionally
framed etc. The rest of my house (2200 Sq Ft), has Oil Forced Hot Air
Heat and Central Air.

What kinds of options would people recommend I consider for Heating and
Cooling the addition?