SQL Server performance baseline benchmark
There's a few different questions inside your post:

Q: Am I gathering the right counters?

I think you copied that Perfmon counter list from an older version of my Perfmon counter blog post. I've updated the counter list over time, so you may want to refresh it - or check with the folks where you got it, if someone in your team is keeping an offline copy.

Q: How should I gather them?

As I write in that post, I'd recommend capturing them every 15 seconds. (Every minute is fine too.) If you go any longer between captures, you can miss peak bursts of activity.

Q: Should I use the averages to build a baseline?

No - averages miss peak load, and include hours (or even days) of time when your SQL Server doesn't have any activity at all. You'll want to focus on periods of time where your end users are complaining about performance.