Set up a recurring Bill for monthly insurance expense that will auto post monthly. You enter a  Bill from insurance company and then select the option to memorize it. Every month a bill for 1250 will be entered.

Record your down payment to the insurance company not as an expense, but to Accounts Payable and with insurance company name. Yes. The company name will appear twice. 

Record payments to the lender. You can set up recurring bills if you wish or monthly write a check.  Here also you will enter Accounts Payable with insuranxe company name for premium portion and second line for interest expense.

Monthly when you Pay Bills you will have credits in AP for the insurance company vendor name to apply against the monthly insurance bill and no payment will be due.

If uou feel this has solved your question you may wish to edit and note that on your other two duplicate unanswered threads on this same exact query