I am looking to purchase multiple units (10+) of the Antminer S9.

I am aware they only take Bitcoin Cash.

How do I go about this process to purchasing bitcoin cash and then purchasing the antminers? I plan to purchase once the next batch is available.

Bitfinex is closing US customer accounts, what exchange can I use to convert my BTC to BCC?

In the meantime, would it be better to go to Avalon?

Looking for the best advice on how to acquire this hardware. I also need to purchase the power supplies.

I would want to receive it by March 2018.

Thanks!