Very nice Manhattan variation as written, but at 2.2 standard drinks I’ll probably make 1 or 1 1/2 of them next time for the evening cocktail for two. Always good to find a really nice two (not counting bitters) ingredient cocktail.
Make sure you try it with Vigo amaro, from Philadelphia Distilling. (I prefer mine with a split of Vigo and Bonal gentiane-quina... and a base of Minor Case sherry-cask rye.)
I love Manhattan variations! And I love the fact that with these sorts of simple cocktails, one can choose any preferred combination of rye, amaro, and bitter brands to tweak the drink to one's own preference.