I'm offering my customers payment plans on their purchases for 3, 6, 9 and 12 months. I would like to be able to create a single invoice with their total amount, and then a payment schedule so they can pay their invoice monthly for a specific amount (amount depends on their payment plan terms). This way they can keep track of their remaining balance and have the option to pay more at any time to pay their balance off early. I don't want to use recurring invoices because this would not be the best way to manage their purchase. The payment schedule would ideally have an option to either split it by percentage or by a dollar amount.

Example: $8,000 purchase on a single invoice

Payment schedule: Monthly (9 Month Plan)

Deposit: $1,000
Payment 1 (due in 30 days): $777.77
Payment 2 (due in 60 days): $777.77
Payment 3 (due in 90 days): $777.77
Payment 4 (due in 120 days): $777.77
Payment 5 (due in 150 days): $777.77
Payment 6 (due in 180 days): $777.77
Payment 7 (due in 210 days): $777.77
Payment 8 (due in 240 days): $777.77
Payment 9 (due in 270 days): $777.84