i mangle quite a lot of vodka so here is my advice on ,vodka.
strength: chilli is readily absorbed by vodka, so go easy, you are gonna have to test it so you know where you stand.
speed: you could buy a bottle of black label smirnoff and a birds eye chilli now, but one in the other and wait till its infused. or. you could buy a cheap ass bottle of polski finest and the same birds eye chilli, put togther, put through the dishwasher, chill and drink before the night is done. the advantage of this is you can make it and taste it in short order. If its great you have a recipe, if it sux, you have drain cleaner.
all that done, i suggest you make a small amount of chilli vodka, a small amount of “sweet chilli vodka” and then something a little more cooling to compliment, perhaps mint humbug vodka.
Christmas eve was seen off with “kiddie vodka*” and “marmalade vodka” saved the hard stuff for when i have a clear day following.
*kiddie = sherbet lemon and barley sugar