That is the height I would pick.

30” is too high...

A counter-height bar stool is commonly 23-28 inches from the floor to the seat (23- to 28-inch seat height). Pair counter-height bars tools with 35 to 37-inch table heights.

.A bar-height bar stool is commonly 29-32 inches from the floor to the seat (29 to 32-inch seat height).

I have a 42" inch high counter which is 1" shorter than yours, and the 30" high stools work just fine for us. We have used shorter stools (our outside stools which are 24" stools) before we bought our current stools. They were way too short.

This seems consistent with most web-based guidance.

http://www.improvementscatalog.com/RoomForImprovements/how-to-choose-the-right-bar-stool-height/

https://www.hayneedle.com/bar-stool-buying-guide.cfm