Scope for the 6.8 SPC AND which scope mount???

Alright folks, the new member of the family has arrived!!! Stag Arms Model 7
hunter, left handed, 6.8 spc!!!!!

Now, how to equip it??

I am thinking about a new scope in the 3-9 X 40 range. I don't really want anything bigger than 42 because I want to keep it streamlined.

Also, I was thinking of getting something on the lower side of prices to keep it affordable. And, so I won't care if I bang it up. $200 range (like a Nikon Buckmaster)? But will consider arguments for a Meopta, Burris, etc.
What are the best options for under $400-ish?

Also, No clue what the best mounts are....
Opinions?

Geaux!!