I have used plans to build a reverse flow offset but not of that size. Did you have a general question I may be able to help with or were you referring g to that model only?
My first pit was a traditional offset. I ran it for years and was able to overcome many of its short-comings but it was a chore to run. I built a RF several years back and figured I'd run the smaller traditional offset for smaller cooks...I haven't touched it in 5 years. The RF is just easier to run/controll temp, doesn't have the hot spots, is more constant temp over entire cook chamber and just puts out a better tasting product, in my humble opinion.
If you built a MACK and are comfortable with it,I see no reason to build a traditional offset.
Thanks all. Yes my MACK is fantastic, almost too efficient. I have to work to get blue smoke. Mostly just heat and no smoke. I am limited to with the wood I have here in Zimbabwe. Lots of hardwood that burns long and hot. I have also used hardwood charcoal combined with wood in the MACK and got good results. Not sure about the next build.