Copper Cathode 10,000mt a month 1000MT min order

I have two sellers of copper cathodes. Origin is Africa for both. They both can give 10,000 MT a month. The price may be around - 12%. Sweet spot is about 2000-3000mt. For both, minimum is 1000MT.

The major difference and issue comes at payment terms. 

Seller 1. He can do SBLC with 2%PB. Chinese buyers do not do SBLC. Other option is transferable DLC but no PB.

Seller 2. He can work on DLC non transferable with 2%PB. However he demand about 8% at loading port against submitted documents and other 92% at destination. 8% is just to cover all costs incurred hence against documents.

If it is acceptable and workable please send LOI with banking details of the buyer. Seller in FCO will also send banking details.