$250 - $300 might be a little light even if you're looking at a mid-range place. Jet Nightclub, not exactly one of the premium clubs, charges $450 for a bottle on a Friday/Saturday. Plus you're going to need to tip the host, server and busboy.
Also, being that its a Friday night you might be looking at 2 bottles minimum. I went to Tao 2 weeks ago on a Friday with some friends from out of town. With gratuities it was $500 per bottle, 2 bottle minimum for Grey Goose. If you want some nice Real Estate inside the club its the cost of doing business.
Your best option is to decide which club you want to go to and contact a host.
Here's a copy of Pure Nightclubs Bottle Menu. Pure isnt an upper tier club anymore and this is what you pay on a weekend night.
Pure Menu
Vodka
Belvedere 475
Grey Goose 475
Ketel One 475
Stolichnaya 425
Skyy 425
Tequila
Don Julio Silver 425
Don Julio Anejo 475
Patron Silver 475
Patron Platinum 1,200
Patron Platinum Magnum 2,400
Jose Cuervo Platino 450
Jose Cuervo 250 Aniversario 15,000
Rum
Bacardi 450
Captain Morgan 450
Whiskey
Jack Daniels 450
Crown Royal 475
GIN
Bombay Sapphire 475
Tanqueray 10 475
Hendricks 475
SCOTCH
The Glenlivet 12 475
The Glenlivet 18 700
The Macallan 12 500
The Macallan 18 750
COGNAC
Hennessy XO 800
Hennessy VSOP 600
Hennessy VS 475
Remy Martin Louis XIII 6,000
BOURBON
Makers Mark 450
Wild Turkey 450
Knob Creek 475
CHAMPAGNE
Moet & Chandon
Dom Perignon 1,000
Dom Perignon, Rose 1,500
Dom Perignon Magnum 2,000
Dom Perignon, Rose Magnum 5,000
Dom Perignon 3L 10,000
Dom Perignon 6L 40,000
Veuve Clicquot, Yellow Label 450
Veuve Clicquot, Yellow Label Magnum 900
Veuve Clicquot, Rose 500
Veuve Clicquot, Rose Magnum 1,000
Veuve Clicquot, Yellow Label 3L 2,000
Veuve Clicquot, Yellow Label 6L 4,000
Veuve Clicquot, Yellow Label 9L 6,000
Veuve Clicquot, Yellow Label 12L 10,000
Veuve Clicquot, Yellow Label 15L 12,500
Imperial, Brut x 2 450
Imperial Magnum 525
Imperial, Rose x 2 525
Imperial, Rose Magnum 550
Imperial, Nectar x 2 525
Louis Roederer
Cristal 2,000
Cristal Magnum 4,000
Cristal, Rose 3,000
Cristal, Rose Magnum 8,000
Cristal 3L 15,000
Cristal 6L 40,000
Armand de Brignac
Ace of Spades, Brut 1,500
Ace of Spades Magnum 3,000
Ace of Spades, Rose 2,500
Perrier Jouet
PJ, Brut 750
PJ, Rose 1,500
PJ, Rose Magnum 3,000
PJ, Rose 3L 6,000
A gratuity of 22% is automatically added to all table service
Failure to meet contracted table beverage minimums
will be assessed as a table fee.
Contracted table minimums are not inclusive