Just started this kit tonight. SG as is was 1.085 w/o the skin pack. I plan on pitching the yeast tonight and adding it to my brute bucket tomorrow morning with about 12-14 lbs of various saved/leftover skins from previous batches. My best guess is about 3 lbs of skins from a Merlot/Cab Sauv/Malbec batch, 6 lbs of skins from a Cab Franc batch, and 6 or so lbs from a Zinfandel batch. Knowing the Malbec usually doesn't lack in color, I'm holding back the Dornfelder skins.
If you must ask, I need room in my freezer since I'm having problems arranging things to get the door to keep closed. My only other option is to add them to the compost pile, which I don't dare do as I will have winemares.
Add those bad boys in there, I'm betting you'll love the results and never toss another once-pressed skin into the compost pile.