How to license assets to be sold outside UE Marketplace?

Hello!

I’ve created blueprint system and I want to sell it on sellfy.com. I am also using some of UE4 example meshes to show how blueprint system works. What licence should I include?

By UE4 example meshes I mean some from the Starter Content and from Content Examples.

The example meshes you created yourself?

You’re not permitted to distribute those to the general public in a reusable way.

So if I replace them with my own, how can I license this pack? What license can I use? I am totally new to licensing…