As a parent educator I help parents with these two subjects all the time.
Please don't force anything at this age. This is a very powerful age and one that can easliy cause tantrums, as you have seen. You may wish a 2 1/2 was showing you older behavior, but he is telling you he is still very young. He is on target, not behind in any way.
He will show you when he has some interest in being potty trained. Boys traditionally take longer than girls to show any interest.
As far the binky goes, if he screams and cries, he still needs it. He is using it to help calm himself internally and help him deal with his need to be powerful at this time.
You can begin to put conditions on when he can use the binky. As long as you are willing to put up with crying. If you do this one step at a time, maybe he can't have binky when he's playing, then he will come to learn that he can do without it. Then when you finally give the binky to the binky fairy, the process will go so much easier than if you just took it away.
Is he allowed to say NO? If not, you may want to consider allowing that so he can grow past this stage.
You don't have to agree with the NO, or give him what he wants, but he needs to be able to say it, and learn what happens when he does say it. That's what being 2 is all about.
And visit my website to see seminar #1, it will help a great deal with hitting and tantrums and learning at this age. We have all new seminars and lower prices, we launched the new seminars yesterday, come see! www.proactiveparenting.net
Good Luck-The Mommie Mentor