Make another gallon, and do some test mixes to get the flavor you want, you might not want it 50/50.
For any leftovers, you can cook with it. Equal parts mead, soy sauce, cheap cooking rice wine, and water. Bring it to a boil, add some green onions, ginger slices, some chiles and szechuan peppercorns if you like. Boil for 15 minutes or so, then add some chicken pieces and boil it for 10 minutes. Cover it, turn off the heat and let it sit for another 15 minutes. Serve, with some of the cooking liquid and fresh sliced green onions in a dish for dipping. Delicious.
Strain out the chunks and freeze the liquid for next time, it keeps gaining flavor. Mine has been going for years.
You can come up with other recipes too, a little in some BBQ sauce, stir fry, lots of places where it could be good.