Ken's products look like a great solution, solid product and nice complete kit. If the shipping, exchange rate and customs didn't add so much on I would definitely grab a couple.
That said, I think for lifting the hooks on the top of the bucket are fine, all the force is going upwards and as others have mentioned you can only apply the force of the FEL lift capacity. So pretty low risk of something happening if you are using good products. Probably what I will add on my bucket as well. For pulling though I think that a hook inside the bucket, like what BCP posted, is a safer alternative. When you pull you not only have the FEL lift capacity but the tractors pulling capacity to consider, also the chain or strap doesn't have to snap, the attachment point could slip or snap as well sending it back at the tractor. Having the hook inside the bucket increases the chance that the bucket will catch or deflect it, it might not and of course you should use caution all the time, but why not put as much on your side as possible