Just an update for those interested, and those who found this on a search engine. I bought and installed a Ferenheat 1250W baseboard heater. I put it on a dedicated 240V breaker. I placed it under the window and managed to wire in a thermostat on the inside wall. I know it's late fall but so far it's been a constant 70-71 degrees in the room. It will spike at 73-74 in the morning when the furnace catches up from the setback. Outside it has been as warm 70 and as low as 30. I have yet to receive my electric bill, perhaps I will update with that information.
I would like to thank all for their thoughts, opinions, and input. This has been a great resource.