Here is a rough sketch of the house and a picture of the fireplace.
Much better
That looks to me, like a masonary FP.
I'd go for it, especially considering you have all that firewood ready to roll. But then, I'm a wood burner, so, ya know
Have you checked this out?
http://www.overstockstoves.com/50tnc13i--epa-certified-noncatalytic-wood-stove--1550131500.html