. Welcome!! This is the numbers that you gave for your build, the fire box is under sized by almost 25% so it’ll probably struggle to maintain temperature. It says you need 9.5 3” intakes and the stack will be 48” tall.
My bad I posted it before I changed the stack diameter to shorten some. If you use a 8” stack it’ll only be 30” long or you could use twin 5.5” stacks and they would be 32” tall.