A word of caution about juicing. Do not juice only fruit. Without the fiber, you've concentrated the sugar—that's too much sugar. A maximum of 25-30 grams of sugar from all sources per day is the limit for health. Above that amount adds to weight and unhealthy conditions for the body. A glass of fruit juice can contain the equivalent amount of sugar as a soft drink... and you know that's not healthy.
The idea of juicing fruit is to add vegetables—adding more each time—until you acquire a palate for greens. Stick with juicing lots of greens, adding one small apple/pear for sweetness.
