Post pictures from the owners manual concerning oil grade and post pictures of the maintenance intervals required(severe vs normal).
No need for OEM filter. Use any quality name brand filter available.
I'd recommend an early oil/filter change to remove break in wear not caught by the filter.
Free maintenance intervals tend to be lacking and possibly negligent from some automakers.
My recommendation is to read the owners manual and its maintenance guide. And, driving style or weather conditions are things to consider if you plan on or see the need to deviate.
With Hyundai's infamous class action lawsuits concerning various other engines and transmissions, I'd recommend the severe/special service interval. This is the theta-iii and needed to be marketed as smartstream after all the 'theta-ii' issues.
For oil, ANY current spec full synthetic oil in the grade recommended by your automaker. You can step up a grade if you believe your driving style or weather might require it... or if you have no faith in the engineering of said product.
The 2.5T is a new engine and an unknown at this point. Take better than needed care of it and read on the Hyundai/Kia forums as some owners tend to bring out the worse in an engine with negligence and abuse. So, it could be a jewel or a boat anchor, and no one knows it yet.