So I need to stock up my liquor cabinet from scratch...

are we going top end here? Here are some middle of the road suggestions...

Vodka- Tito's (Made in Austin)
Rum- Appleton's is good, but Captain will serve the purpose probably.
Tequila- Don Julio is one of my favorites
Gin- Tanqueray maybe? Don't drink much gin.
Bourbon- Maybe Maker's or something? Can't go wrong with Jack either, IMO.

Some others on here might have some better suggestions.

Jager and rumplemint

Vodka - Stoli or Ketel One
Tequila - Patron Silver
Bourbon/Whiskey - Basil Haydens

WRT bourbon, Jack Daniels isn't. But it's good to have a bottle of Jack to satisfy people who think they like bourbon but really only like Jack and Coke. Jack's closest bourbon relative is Jim Beam.

Try to go off the beaten path. Everyone's had Jack and Jim, and they're boring. Jim Beam' small batch series (Bakers, Knob Creek, Booker Noe and Basil Hayden) are all seviceable bourbons - as is Woodford Reserve - and all should be easy to find. If you go to a liquor store worth it's salt you should be able to find some obscure and some small batch labels like Elmer T. Lee, Blanton's, W.L. Wellers Special Reserve, Four Roses. All of these are excellent.

Also pay attention to the proof. If the intent is to drink it neat, stay below 90-95 proof.

I'll tell you what I have:

Vodka: Ketel One or Three Olives

Rum: Appleton Estate (already mentioned several times in this list)

Tequilla: Sauza Hornitos or Cuervo 1800

Gin: Bombay Sapphire

Bourbon: George Dickel or Maker's Mark

Scotch: Macallan

Gin: Bombay Sapphire

here's hoping you have a kegerator with a keg of dixie at all times ..

Vodka - Ketel One

Rum - Appelton Estates (Jamaican Rum)

Tequila - Patron Silver

Gin - Tanqueray

Bourbon - Knob Creek/Booker's

Whiskey - Jameson's

maybe some tonic and club soda (Schweppe's)