That's a neat looking pack. I don't think I've seen one with both a zipper and a flap before but that one made it look nice.

As for the sternum strap, those are readily available as an accessory and can be added. The waist strap might be a bit more of a challenge to add unless you don't mind sewing it (or having it sewn) onto your new pack.

I don't usually find a waist strap is needed for day hikes but if you do, then you might want to keep searching. I've been hiking for a while and I still haven't found the perfect pack. There are always compromises to make and what suits me today might not tomorrow.

Good luck!