Should we buy express pass AND early SNW access at the same time?

It’s our first time going to the park, and I’ve seen posts about express pass, and for SNW early access, but is it worth getting both?

We’re planning on going on March 8th, which is a Saturday.

We’re in our late 50s so standing around in lines for too long isn’t great on our knees and we’re mostly interested in SNW.