As Greg (lsFarm) You will probalby loose 50% into the basement, it radiates a lot of heat, if you can make a jacket to capture the heat, that would help alot. Mine was a direct vent also, But since I have chimney now, I removed it and hooke it up direct as shown.
I actually cut my own 8" hole to move as much of the heat upstairs with the built in blower. I also put an 8" inline duct fan to move even more air.
If you can order with the higher CFM blower, I think 400cfm? do it! The standard is 265cfm. I also blocked off the front of the stove where the vent originally was.
Also, depends on how insulated your house, windows, etc...our basement is drafty, but I got it from 48 degrees up to almost 60 in spots and sealed alot of the cracks.
Pic. of my setup.
The large pipe is the cold air return for the furnance, I will hook up my inlet to the blower eventually.
I also have another larger stove that I am in the process of hooking to hopefully give me more heat.
Any questions, just ask!!