2:1? I'd say no way. I wouldn't even go 1:1 for the Four if had either bottle. I've had all three beers mentioned, and there's no way I'd trade either one of them for a 5 year old coffee/milk stout.
It's not in any way feasible. You're not even going to get a 1:1 done more than likely. Not a whole lot of demand for Four outside of Surly homers in MN, and even there demand is probably falling off as quickly as the beer is.
Wow. You're really trying to squeeze as much as possible, eh? Maybe if you add one of your SR71's it might be a little closer, but still pretty tough IMO. Good luck with your regroup.
I would absolutely love to get ahold of a Four and its been one of my top wants for a long time. That said, there is no way I could trade a DB Huna or BA Abraxas for it
I wouldn't wait much longer. Had a few over the last 2 years and the coffee is certainly fading fast. Still a good beer, but not what it used to be.