Alan Scott Oven - Join to existing wall

Hi all, my name is Matt and I'm new here.

I'm busy planing for a bread oven for home and I'd like the oven to be accessed from my kitchen which means keying it into the existing exterior wall. I've seen one or two mentions that this design is referenced in plan package 1 but can't find any additional info. Has anyone done this and can you give any advice for or against? I don't see it being very complicated to do, except that the flue would need to be angled backwards out of the house wall. Also it's a load bearing wall, but if supported while the front face of the oven is being built then I think this should be fine. Here's a pic of the general idea.

oven.jpg

Any info would be very much appreciated. Thanks in advance, Matt.