RE: Not sure what to do
Tell you what Axel. I bought a 2003 Jeep Grand Cherokee with the 4.7L HO engine which is still my crappy weather / airport car. The day after I bought it we drove that thing from Pennsylvania to Vegas like we stole it. Drove the daylights out of it, and it's still the best running engine I've ever had. I'm over 90,000 miles and I can't remember it ever using oil. You will be fine, and you're out of the break in period in a day.