The price could touch $13. But I do not think it will stay there for long. It depends on further development of the platform.

You only need S7 from the Bitcmain. You can use your PC power supply if it is of good quality.

I thought the campaign has finished. Has anybody else received the payments?

It is good for the segregated witness technique to be tested first before implementing in the main chain. How long will the test last.