Thank you mdHorvath and Carbon12 for your valued comments.
As I have not derailed the AHS S130 train yet:
1. Is it safe to burn a mix of rice and pea in the S130 Coal gun or should I plan only using pea and buckewheat?
2. is my 8" by 12" by 20 foot chimney to big for the forced draft of the S130?
a. The S130 flue pipe would require it to take a left hand turn and
slight elevation to reach the lower thimble in the chimney.
b. saying that, I could raise it on solid concrete blocks to get it near level before it takes the
left hand turn into the chimney.
3.I would have to reduce the thimble down to 5 inch of course but thats a minor issue