Visiting Houston for 10 days, want tips / advice!

Hello! I'm a 24M Norwegian solo travelling to houston for about 10 days (16th – 25th february). I got the first three/four days lined up, other than that I have a lot of freetime. I got a pickup I can use to get around, so there's no place off limit!

Here's what I have planned so far:

– NASA Space Center
– HMNS Planeterium / Dinosaurs
– Galveston Naval Museum
– Chase tower (if its open to the public?)
– Possibly skydiving
– Testing out every fast food chain I can find
– Planet fitness

Anybody have any fun ideas? I don't drink or big on partying, but I love good company and activities. Is there any places one could meetup and do stuff with other people, like rock climbing, bowling, paintball, amusement parks etc? Otherwise I will do a lot of shopping, what's the best malls to visit would you say?

Also anything I HAVE to try like food or experience? 🙂 Thanks in advance!