Spare tire

Was thinking of running 295/70r17 ko3 which measures to 33.3x11.8. Was wondering if running the KO2 spare of 34x10.5 which measures to 33.5x10.5 is okay.

 

If you only run that spare in the front while in 2wd you'll be okay.
If ever you need to run it in 4x4 for an extended period of time it will not be optimal and may cause weird binding

 

With that small of difference I would not be concerned running it even on the rear. The actual size however may be more than .2.

 

You're fine. Only if you had a mechanical (clutch-type) limited-slip differential would this be an issue (which your 2016 did not come with).
Same for the 4x4, it'll be fine as long as you are on dirt (which normally would be the case anyway).