I would go out and buy 3) 1 gal. glass jugs, 3) 1/2 gal's cheap vodka, sugar Lots of washed cherries stem removed.
I would take a gal jug and put 2 cups sugar and a 1/2 gal of vodka and shake until the sugar has disolved. Once disolved, fill the rest of the 1 gal jug with cherrys, pits and all. Once a week shake the jar. Taste it in about 6 months.
now........... what about the left overs................... 2 more jugs and what not. Well now. i would play around with the sugar. So............ would still use the 1/2 gal vodka but would do one with 2 1/2 c. sugar and the last one with 3 cups sugar. This way you can find out in 3 batches how much sugar is best for this drink or if you need even more. Shake all bottles once a week. mark them so you know how they are made. I call this "cherry bounce" its like a cherry pie that will make you fall down while your ice fishing. Lolololol The pits are actually important in this drink. So, fill the jug with the vodka/sugar mixture full of cherries and enjoy drinks in 6 mo. or so.
With tart pie cherries I make it with the 2 cups. sugar, so I am not sure how you will need to adjust the sugar.
But, at least this is a good start to a great finish.
The lady w/4 dogs, 4 city chickens, 5 meat rabbits, their kits, and a lizard