Thanks everyone for the replies. Antoine, that is the picture that gave me the idea in the first place, but hubby wants the actual fire to be of the masonry style.. Personally, I just want heat! As for the length and anticipated complications... It wouldnt be any different than a bench concept except taller. Of course the kitchen pipes will need to be insulated from the heat but I anticipate access doors for repairs, etc. The entire length will be about 8ft, I'm thinking tubing going out 8ft elbowing upwards instead of sideways and back to the outside wall before rising through the ceiling and out. Like the one done in the greenhouse on YouTube, of course i will have mine cobbed completely to the exit point. Thoughts? Given the complexity of building a masonry stove I personally think the fire should be in the counter but worry about its proximity to the outer wall. Putting it on the far end of the counter would require a 3rd 8ft run to exit, that seems it would be too long given what I've read.
Any input is welcome.