coopers russian imperial stout mods

[sbond10]

I posted this over on the coopers board but i thought id get your responses too
i have alot of idea test the waters batting around my head some may come to fruition some may not. I just like to bat ideas around and see which tangent they take. But anyway ive been looking at the coopers russian imperial stout and thinking lets take it up a notch or ten.
The orginal recipe is
1.7kg stout kit
1.7kg dark ale kit
1.7kg lager kit
1kg of dextrose
So my mods would be simple but ill explain the reasoning behind them as i go. First id dump the 1.7kg lager kit for 1.7kg of liquid malt extract as its cheaper and i feel any lager type tastes would be destroyed by the stout and dark ale. next i feel i wanna up the dextose to 1.5kg just simply to make it even more of a knock you sideways beer maybe taking abv to 12% . Next id use 2 sachets 7g each of champagne yeast i saw a shop bought russian stout one with it in to give it a dryer taste so id like that. Then id just a nice 12g gram real ale yeast sachet summat like like gervins. so that would take my yeast bill to around 22g as i notice cooper say with it being so high in abv the yeast can struggle so i thought more yeast to help the cause or should i consider 2 sachets of real ale yeast.
So your thoughts anyone giving the amount of yeast should i brew it in the bath or local swimming baths....

[sbond10]

can a mod delete this wrong forum