To my knowledge, without those extra combos you can't shave off enough time to get Gold. You'll run out of combos before you get down to Gold.
Originally Posted by Creech
As a site, we don't support calling it "xbone" as that was a name that was used to refer to the system in a negative light. Since the site exists to support the system, being deliberately negative towards it seems counter productive.
tl;dr - Call it the Xbox One or X1.