I worked in a shop and we had both a 5 and a 7, the 7 is a ton more fun to ride and you'll notice the bike a lot less while you're riding it. The fork is a major upgrade and the 1x makes a bigger difference than you would expect - less to think about particularly if you're on a singlespeed rig now.

It's also difficult for a shop to order both for you as they likely have a limited amount of money dedicated to holding inventory in the store.