This is unreasonable. G-d can do all things, but by doing some things He limits Himself from doing others. Once He decided to create a universe of matter and energy, He limited Himself from having a universe of pure energy. It's like the old question about G-d creating the rock so heavy He can't lift it. G-d is real, not an invention. It doesn't reduce His omnipotence to suggest that, by exercising His omnipotence He limits Himself.
You can present the possibility that an omnipotent, omniscient being can have created creation in such a way that Satan could have been everything else G-d wanted him to be but not have the opportunity to sin. But until you become omnipotent and omniscient yourself, you can't suggest the solution so you don't really know if there is one.
G-d had a reason for creating creation the way He did. We do not know that reason. Therefore, we can accuse Him of not trying hard enough to make it impossible for Satan or man to sin, but we can't really know it was possible.
As to posting verses from the Gospel, a few verses won't do. The whole Gospel shows that G-d takes responsibility for what He has done. G-d put Adam in a position of test, knowing full well that Adam would fail. G-d was, in a sense, responsible for Adam's failure. That's why G-d took the initiative to repair the damage Himself. The Gospel, and many passages in the New Testament, make it clear that Jesus was not 'Plan B.' G-d knew from before the foundation of the world that He would one day face the cross.
Shalom.