One thing I noticed though... those who say "use the text for setting up the date or phone" tend to be rather afraid of messing up and/or getting themselves into a position where they talk too much on text, and realise there is nothing left to say in person. But you just have to be aware of what you are doing, and you'll be fine.
Find out for yourself what's the truth though.
If I were in your shoes, I wouldn't use those tickets on her. It's her favourite artist. She could string you along, act interested, and dump you after the show. Get her out with something else; that allows you to gauge her interest better.Anyways I realized I had tickets to a show this tuesday so I asked her, she said she would check her schedule and let me know, but the artist was her favorite. So I'll wait and see. Though the vibe I'm getting this time is hard to read. I figure in general most girls would probably respond to find out who the concert was about. It was kind of short messages no real bantering. so I'll wait and see if she gets back no biggie.
BUT... if you reckon it's fine going along with your original plan, then just drop her a text after the weekend. Never mind who gets back to who first. Take the lead on this one.