Amount of yeast needed for 8 gallons

I am going to experiment using corny kegs as fermenters. I have a 15 gal kettle so I plan on brewing enough to end up with 8 gallons post boil and split 4 gallons between 2 kegs to allow enough head space for the krausen.

I am going to brew a brown mild and shooting for OG of 1.040. I had planned to use 1 packet of Danstar Windsor dry yeast for each keg but when I used Beersmith to scale the recipe up from a 5.5 gallon post boil batch the amount of yeast needed stayed at 1 packet for the 8 gallons. Should I split the 1 packet between the 2 kegs per Beersmith or use 1 packet for each?

pitch one into each just to be safe, you should post pics on how you rigged up your air lock.

Use the Mr Malty Pitching Rate calculator. Easy as pie. It'll tell you exactly how many grams of yeast to pitch.

Cheers!

Bob