Aluminium Ingots required for annual contract

We require Aluminium Ingots for the following:

1. 1,000MT x 12 months contract (Hamburg)
2. 5,000MT x 12 months contract (Oman)
3. 10,000MT x 12 months contract (???)
Total for all 3 Buyers is 192,000MT for 12 months contract.
Payment Terms:
30% Advance after factory visits/discussions, balance 70% to be wire transferred upon copy of shipping documents at POD.