Prepare Cherry Simple Syrup and Strawberry Simple Syrup in advance and allow to cool completely before using.
Add 3 cups peach juice, 3 cups pineapple orange juice, 3 cups lemonade, 1 cup Cherry Simple Syrup, and 1 cup Strawberry Simple Syrup to a large punch bowl and stir together.
Top with 4 cups lemon-lime soda just before serving. Serve with ice in a bowl or on the side (prevents it from being watered down).
Garnish the bowl and glasses as desired with fresh fruit, such as lemon wheels, lime wheels, orange wheels, strawberry slices, fresh cherries, pineapple wedges, and mint.
Notes
Use club soda for a less sweet option.
You can also use equal parts pineapple juice and orange juice if you can't find the blended juice. Try to avoid juice blends with added sugar or other juices.
I found peach juice at Walmart and Target, it may also be available at other supermarkets.