Mounting Hook

Made these for use with some 10 pound command strips. The included hooks were too wide to fit into the thing I'm trying to mount, so these have the same base dimensions with a smaller hook part. I printed this flat on its back and allowed automated tree-style supports in Cura.
I think the infill of 70% is overkill, especially for the base of the command hook. I just wanted to have 70% in the hook part, but I'm not sure if it's possible to design different infill percentages for various sections of a print. That would save a lot of print time and material.
If this wasn't going to be load bearing for you, you can definitely get away with something like 20% and be fine. But because I'll be putting more weight on it, I just wanted to make sure that I have a robust part, especially since the hook part is thinner.
The actual printer I'm using is an Ender 2 Pro.