Other than that with an average GTX 1070, 9MH/s will lead to a crash. An optimum value with your latest release it's 8.2, if not a bit less.
I run my Gigabyte 1070 G1 @ 9mhash without any problems. At stock clock they deliver 8.6.
Every card is different, and it's impossible to write the speed you will have for your card and settings.
that's why I've kindly asked you to verify your calculations, because they are, too much often, wrong;
I use a public website calculator.¨
I also did 24 hours of testmining and i got $2.4 on a gtx 1070. Profits fluctate, and I can't calculate your profit in the future.
here is the spreadcoin difficulty chart since feb 23 (1 week)
sp-mod #10 was first released on feb 26.
![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fi64.tinypic.com%2F2hchkzk.png&t=663&c=l3MillliKH6InA)