i dont love it, leave your pan alone!
That said I like the 2" pipe, smaller would be a mistake but leave it as a single pipe, you wont be able to clean the rungs of your ladder; you need to be able to clean the niter and crud that will build up out of the pipe.
just weld a row SS 180 degree U bends on the bottom of of the pan using thin wall ss pipe fittings
Of course by the time you buy the fittings and do the mods buying a souped up 1/2 pint pan with flues may be cheaper as you can sell the original pan.
the smokey lane full pint or hybrid pan i think its called...
At least 5th Gen Sugarmaker
30"x10'6" Vortex with Steamaway
1000ish on vac with Atlas DSV065 Claw,
? buckets per how dumb i am feeling.
Prehistoric DG500 RO, and a big Timberwolf splitter.