Few tips:
Make sure you don't over handle the dough
don't over flour the work surface
bake at 400 F
finished when the internal temperature of the bread is 200 - 206 F
If you want more color, wash surface of dough with egg...
also, when baking a flour based item, an internal temperature in the center should reach 197 - 201 f.
even if it looks done, even if you stick in a toothpick.
this will insure that it is fully dehydrated, coagulated, carmelized and...
The chocolate cake formula requires 32 oz of flour.
I have spoken with the editor about this issue.
make sure you use a cake flour - it is high ratio and can withstand the high fat/sugar called for in the formula.
Sweetex should hold up beautifully.
Try the above recipe and look up Toba Garrett there are several good formulas in her book.
Can you use a meringue base for your butter cream?
To scale your formula, make sure you are using bakers %'s basing the flour as 100%.
Flour 100 %
Fat 50%
Liquid 25 %
Salt 1 %
That way you can base the formula on what you need or what you have and always...