This is a tiny log cabin with 12x16 foot of total space. 4" thick logs so it should have a nice R value total. It was built to be moved by truck so it is on 1/2 a mobile home chassis. The plastic lining and insulation below the floor needs redoing so that opens the option of Radiant floor heat while under there anyway. For a long time it will be a micro home rental for college student? orr? sooooooo....... what is best bang for the buck in that case? Small LP wall unit? Faux LP fire place? Radiant Floor? (CNC or LP) Baseboard electric Electric Radiant heater? orrrr?