As much as I'd love to convince you to drink some other cocktails, you've got a set of decent selections already. I'll add and reiterate.
Bourbon $25-$35 (depending on where you are assuming US) these are mixing price and all eminently sippable neat:
- Wild Turkey 101
- Elijah Craig Small batch
- Buffalo Trace
- Old Grand Dad Bottled in Bond
Tennessee whiskey (like Jack Daniels but better and about the same price):
- George Dickel
Scotch $20-$25 It will hit the note for speyside drinkers and won't break the bank:
- Chivas 12yr
Scotch $35-$50 cheap single malt you won't mind sipping after the party:
- Glenfiddich 12
- Glenlivet 12
- Bruichladdich Laddie
Irish $55-$60 not big on Irish whiskey, but I always have a bottle for the ones who insist and Jameson is frat party trash:
- Redbreast 12yr
White Rum $20-$25
- Plantation 3 stars
- El Dorado 3yr
If you feel like something with color and a bit bigger flavor,
- Appleton Signature
If I could beg you to step away from the amaretto, a boulevardier is a fine whiskey cocktail that can be adjusted easily to taste. Get you some campari and sweet (red) vermouth (carpano antica, cocchi di torino, or punt e mes) to go with the bourbon. I like a ratio of 2 bourbon to 1 campari and 1 vermouth.