Using the gotmead calculator (google is your friend)... I estimate that you should have a gravity of 1.120 which equates to 16.25% abv. Did you adjust for temperature? I assumed that you will have a SG of 1.050 for the apple juice alone.
D47 will take you to 14-15% abv, perhaps even more if you really farm it well. So you should expect the mead to be just off dry with a FG of about 1.005 or more.
Bottle when it drops clear and after you have backsweetened. 5-t6 months minimum. YMMV.
Give it a year or two before expecting this to taste good. I bottle in 750mls and in beer bottles, so I can sample monthly - the beer bottles, and still have a case of 750s left over.
Relax, don't worry etc. and so on.
Primaries: Old Ale, Barleywine, ESB, Scottish 80/.
Secondaries: Lime Wine, Strawberry-Banana Mead, Carmenere (from 144 lbs of grapes!), Engl. Barleywine, Modded JOAM, Concord Grape Pyment.
Kegs: Choc/Coffee Stout, Saison, Dry Stout.
Bottles: Belgian Str. Dark, Dubbel, Cider X 2, Modded JOAM, RJS Pinot Noir, RJS Aussie Cab. Sauv.
Coming soon: Blueberry Mead.