Look again ... those 1040-ES forms are for the next tax year's estimated payments( 2018) not the current year's balance due and are optional not required. The payment for the 1040X form is sent in full with the amended return. If you cannot pay in full then make any payment with the return and the IRS will be glad to send a bill for the balance due later ... you can get on the payment plan at that time if you wish or pay it in full or send another partial payment.
