Velvedere vodka is overpriced here, you should try Stoli or Wyborowa, wich is a cheap and a good option.
If you are going to mix White russians, go ahead with Stoli vanil and half n half. The best IMO
Don't forget the Tequila, Herradura and Don Julio are my favorites. Jose Cuervo and Patron are cheap options.
My favorite Rums are from Cuba so forget about it in the States, you should try the dominican Barceló or Brugal.
Gin, Bombay Shaphire or Tanqueray
Maker's Mark Bourbon Whisky, wild turkey, Canadian Club
Cachaca from Brazil
Cointreau
Spanish brandy, Fundador
Campari
Cinzano rosso
Noilly Prat
Limes, oranges, lemons, olives
If you are going with one drink just like Bourbon, Rum, Tequila... Don't change it or have beers or something, it's the best
tip I can tell you to avoid the hangover