Not to be nit picky, but with such a beautiful, top of the line rig, those hooks have to go. You ought to smack whoever put those on. You don't weld on "pin on" hooks! It will cost all of about $10 to buy weld two on hooks that are made to be welded on. Besides being far stronger, it just isn't right to have such a wonderful high quality rig with Rube Goldberg hooks on the bucket. Simply put, that's just wrong. The only thing they got right is having them in line with the loader arms. You never want to pull on a bucket on the outer edges of the bucket.
Here is a picture of the hooks you should have welded on your bucket. One is on a Kubota and one on a JD heavy duty Worksite Pro bucket. Plain and simple, I'd demand the proper hooks be welded on your tractor. It's far, far too nice for such a botched up job on the hooks. Again, I hate to sound picky, but everything else is so perfect. The sloppy botched hook job simply doesn't go with the rest of the rig. Fortunately, with such a small contact area, those pin on hooks can be cut off with a grinder in a few seconds and you can have the proper hooks welded on. But, since the person who welded those on was, er..., well, dumb enough to do that, I would probably have someone else weld the proper hooks on. Good luck!