He's 7. I doubt he cares about a pattern. He wants dinosaurs.
I think the fabric is very cool but the dinos on your fabric are really small, and work great as background, or filler strips just like you have them set out on the table.
I haven't been around a 7 year old boy in, like, forever, so I don't know if these are too babyish for him:
http://www.bugfabric.com/dinosaurs.htm
You could get a bunch of FQ's with larger dinos, and cut those up for the alternating strips. More color/less white to coordinate with your strips. Make 8" (or whatever) squares with colorful dividers.
Scale is very important.
That would be a very easy solution and give him a ton of dinos.
Another option, a bit more work, would be to make the alternating rows FULL of larger dinos - applique or paper pieced, and make THEM the focus of the quilt. You could use brights that coordinate with the colors in your strips. This is the route I'd go.
You could buy an existing pattern, or use any of these for the shapes:
http://www.google.com/search?q=dinos...ls=org.mozilla:en-US:official&biw=1280&bih=670&prmd=ivns&tbm=isch&tbo=u&source=univ&sa=X&ei=IZcVTu2BAcnpgQe_laQw&sqi=2&ved=0CBgQsAQ