"90% of my trips will be less than 10 miles. Very little hwy mileage but to be fair I live in the subburbs of Philadelphia so my city mileage is actually suburbs mileage if that makes sense."
That oil will rarely reach operating temps. It's biggest issues are going to be chemical stresses from condensation (acidic) buildup and oxidation prevention.
Syn cold flow properties may be an advantage in philly, which stays chilly 5 months out of the year, cold 2-3.
Rather than arguing "Syn!" "Dino!" "Syn!" "Dino!", find an oil with good TBN retention (start looking at the oil analysis section) and go from there.
Should be a great car. I've known 3 nissans/datsuns that were all reliable, well-built, and fun to drive.