Partial or all at once. Score will net same result if aggregate utilization is equal. Only thing not equal is the extra interest fees you will be paying for those revolving accounts.
To answer your question, better to pay it all off at once.
If your loan was specific to consolidate your debt I would pay off all the debt at once, don't let that money sit in your checking account and intice you to use it for other things and anyways there is no value in spacing out the payments. The loan you are paying off is an installment loan so don't worry about a score hit for paying off any other installment loans.
Pay ALL that debt off right now.
Do not wait.
