I also approve your required skills index. Good idea. Believe it or not, I'm just learning to play with a pick for the first time in my life. I've always gripped my index finger between my thumb and middle finger and used it like a pick, but it has proved much more difficult using a pick instead. Hybrid picking? Tried that once for 5 minutes - too much. I need time to get normal picking done properly before I move on.
I've started "Long Time". I'm finding it much more of a challenge. After about 7 or 8 days I've got the intro solo, pre-chorus and chorus (nearly) down. My fingertips and forearm hurt!