The wear itself is OK and nothing alarming. Keep an eye on the Si and make sure it's coming down; if not, look for air leak in the intake tract.
There's no need to run a syn for 5k mile OCIs; that's a total waste of money. Any decent brand conventional oil will do just fine; these engines don't need anything special.
The 3.5L Duratec is a good engine, except for the placement of water-pump inside the timing cover. Keep an eye on the coolant bottle and the UOAs for coolant. That may or may not give indication of pump failure. If you're lucky, the pump will fail outwardly and leak out the weep hole near the alternator and let you know things are amiss. If you're not lucky, the shaft seal will fail and it will leak internally into the sump and contaminate the oil. Unfortunately, at times it happens so quickly that you'll not see it in the UOA because it can go bad in 100 miles, and you'll never sample often enough to catch the data shift. Other times it's a slow degradation and you'll see evidence of coolant in the oil. Some pumps have been known to last 150k miles or more; others have failed as early at 60k miles. No rhyme or reason to it. Some hate the engine for this, because a water-pump job can cost around $1500 on this engine. That is admittedly expensive, but it's mostly all labor.