Double A4 Paper

Dear Sir
Looking for Double A A4 paper size 210mm * 297mm 80grs for contenair 20 feet with pallets destination senegal.
What is the CIF price at the port of Dakar?
What is the ransit time?
What is the payment method?
I propose a payment by a letter of credit L / C confirmed by a premium and irrevocable bank.
When we make a first step and that the company that I run has discovered the new supplier, we can change the mode of payment if necessary.
I await your prompt response