1st 500 mile oil change on Chevy crate 350/290

[Coach]

I'm coming up on the initial 500 mile oil change for my new engine. It has flat tappet cams, so I need with a zinc formulated oil or a synthetic oil with a day zinc addative. Not sure which way to go, so I am looking for some advice. Where I live, full synthetic Royal Purple, Lucas Oil, Valvoline, etc.. are available, but can't locate Red Line, Joe Gibbs, Rotella, etc.. Also, as far as filters are concerned, I was thinking either Wix, Napa gold or ACDelco.