Wyeast 1388 eats 120 points. That means it will take a 1.120 gravity mead to 1.000, a 1.140 mead to 1.020 and so on. You may get plus or minus 0.005 points depending on your nutrients, temp, etc. This is because the ABV tolerance of the yeast is around 16%.
All oaking is done at 70 F as I have...