do i have enough yeast for my stout?

[chitownbrewer]

We are brewing a stout today that will be at about 1.090 o.g. I have one packet of wyeast 1056 american ale xl. 125mls. Do I have enough or should I run and get more? Fast resopnse will be appreciated. Thanks all.

 

[helibrewer]

Mr. Malty says 3.3 packets of liquid yeast, 1.5 of the 11.5 gram packets of dry yeast for 5 gallons.