@sammyk...For my extracts, I essentially cover the fruit in Everclear and top off by an inch or so, using an airtight jar. You should get a highly concentrated extract within 30 days, of course if you can allow everything to soak for longer and a better flavor will impart. The amount of liquid would depend on how much fruit you are looking to cover.
For my cordial (think a sweet sipping liquor): I used equal amounts of destoned or dried fruit and sugar. My plums were fresh and I left the skins intact. I want to say I used just approx a 1.5-2 liter of Everclear for my 3 pounds of fruit. I made sure to use greater than 80 proof so that it would not freeze if I opted to stash a bottle in the freezer. It went in a large glass jar with airtight lid and it was stirred daily for the first 10 days and then when I could remember. I did put a plate on top of the fruit to help keep it submerged and eventually it dropped to the bottom on its own. It was interesting to watch the liqueur transition from purple plum color which it maintained for 6 months and then all of the sudden it went golden. You could pull the plums off at any time, and you can chop and freeze it and use it to make a drunken topping for ice cream or incorporate into jam, or just toss it. Makes an excellent cough syrup and throat soother believe it or not, my MIL gets a 500ml bottle every year, and gets testy if I do not have one for her.
When I made the dried apricot batch, I ended up adding one of those "plane sized" bottles of Butterscotch Schnapps to the finished version and O-M-G, it is amazing stuff. The longer you can allow the cordials to "marinate" the better.
For my homemade vanilla, believe it or not my favorite to date is made with Evan Williams Honey Reserve, 70 proof, and I split at least six to eight 5" Madagascar vanilla beans down the center and stash them in the bottle. Prior to that I made it with 80 proof Everclear. I start a new bottle every Thanksgiving, that way I know I will always have some available for gift giving (which I bottle in the small bottles similar to what you are given at Cracker Barrel and such for your pancakes).