Load bearing wall & shelving suggestions
That is one heck of a shelf! The top of the wall has a top plate. Remove the lower 45 degree legs and fasten them to the top of the outer corners of the shelf. Use 3" wood screws. Then attach the 45 degree legs to the top of the wall where the ceiling meets it. This is the reverse of what you have now. I cant tell from the photo but make sure the rear shelf board against the wall has screws through it that enters studs. All of the other excess wood is overkill.

This will free up all the space below the shelf and provide a boundary of sorts for the items you plan to store.  Don't worry, you couldn't possibly affect that wall with this shelf. The shelf would give before the wall would even budge.