I would probably go with 6 1/2 ripe bananas, about 20 lbs. of ripe destoned peaches. About 13 lbs of sugar, pectic enzyme as per instructions on container as some vary depending on which kind you use but you surely want to use it. 5 tsp of yeast nutrient, 2.5 tsp of yeast energizer. You will also want about 5 tsp of acid blend. Acid blend and sugar are just estimates and should be checked with acid test and hydrometer. You will need about 4 gallons of water to bring this up a little over a gallon batch so that when you rack later you will end up with 5 gallons and not have to worry about what to top up with. When making fruit wines we like to go over the amount we are shooting for finished so you will need a 1 gallon jug and #6 bung with airlock to hold extra until racking the wine from carboy off lees.