peach makes a very good wine, um, i don't add grapes to mine and yes i like at least 10 lb per gal, but i like my wines sweet, i try to keep my wines depending on the fruit or berry with a SG of 1.030 to 1,040, and yes at that SG they taste like a really good peach right off the tree, john west where boughts are you from, my peaches still have a way to go before i can start to pick, seems both my elderberries and peaches are loaded but are slow to getting ready, and as stated by riceguy and others use lots of pectic enzyme , from the very first of starting your must, and freezing tree picked peaches helps break the cell walls down, if buying homewinery.com concentrate is good for a max of 4 & 1/2 gallons, but if you call them you can buy a 1/2 gal concentrate and a extra pint, on, any fruits i have to buy i buy 3 concentrates,, that lets me make 13 & 1/2 gallon, when i rack from primary to secondary carboy, plus put the extra gallon and a half i use to top off with and i end up with 12 gallons of peach wine, best of luck,
Dawg