Trying to recreate a drink

I had a drink, at a bar, that I really enjoyed. I'm trying to recreate it at home. I have the ingredients but not the amounts of each ingredient. Would anyone be willing to hazard a guess as to how much of each of these would create a decent drink? I really just need a jumping off point. I can alter to taste. Any help would be appreciated!

Rye bourbon Amaro Montenegro Caramelized fig syrup Black Walnut Bitters