As you send off those checks, be prepared for more interest. It may be that interest has accrued since you asked for those payoffs.
The checks you send may not complete the payoff required. Either call before you send them, ask for a payoff about 5 to 7 days out, and add a personal check for the complete payoff, or watch for statements after they process the checks you are sending now for the residual amounts owed.
Lastly, those credit cards with annual fees can fund themselves. You may want to cancel these now, or mark your calendar for the renewal dates so you can then decide if you want to keep that card at the price of the annual fee.
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AndyZ CRCM
My opinions are not necessarily my employers.