If you're going to try that, I would make a starter of WLP099 Super High Gravity yeast and pitch that. The Champagne yeast isn't going to do anything for you unless there are some simple sugars left.
Something is always fermenting....
"It's Bahl Hornin'"
Kegged: Sour Saison, Pale Ale, Aggie Ale, Firestone DBA, De Koninck Blonde
Bottled: Belgian Quad (Grand Reserve), Derangement (Belgian Dark Strong)
On Deck: Pliny the Younger