clearances for hearth mount stove

I am planning install for Jotul 600 woodstove. This is going to be a hearth mount stove. I want to make sure I have appropriate clearances so I have a question. Hopefully I will be able to word this so people will understand what I am asking. The owners manual does not spend much time discussing hearth mount situations.

So, the manual says that without rear heatshield I need 19 inches of clearance to combustibles behind stove and 13 inches to the side. I have plenty of clearance (like 6 feet to either side of stove). And directly behind the stove is masonry fireplace so I should not have any issues there. My question is how to determine minimum clearance to the combustible wall that extends to the left and right side of fireplace. I would like to mount the stove as close to the fireplace as possible but I wanted to make sure the heat was not going to be too close to the walls that extend to either side of fireplace. The Jotul 600 is 29 inches wide, the fireplace opening is 44 inches wide, and the total width of masonry is 60 inches wide.

SO, if I mount the Jotul right up by the fireplace opening then the sides of the woodstove will be roughly 15 inches to the combustible wall that extends to the left and right side of the masonry. This is greater than the required side clearance but less than the required back distance. Am I ok? Or do I need to move this stove forward, if so, how much?

Or, better question, am I sweating the small stuff way too much? I just want to get everything just right and not have to worry when it is up and running.

Ok, I just attached a photo. Sorry, photo from last christmas is the only one I can find. Now, I have already removed the decorative white trim and mantel because those were obvious fire clearance issues. Also, I promise the christmas tree has been removed (though never as soon as it should be after christmas!)
So, now I have 60 inches from where the brick begins on the left to where the brick ends on the right. Will I be able to put my 29 inch stove pretty close to the fireplace opening ( I would like to mount within 2 to 4 inches of face of fireplace). I need to figure this out so I can determine how far out to build hearth extension.

Thanks in advance for your help!

Ok, thank you. I will certainly do the block off plate. Also doing insulated stainless steel liner for chimney. I was not planning on doing the blower. Do you think a lot of heat will go back into the masonry?