Firstly using that crawl generator really isn't the way to go for this. I can't quite put my finger on what doesn't sit right with me but it does kind of make the crawl look like an old video game sequence. Secondly this program is going to cause a little problem for you. Once the crawl has finished how are you going to pan down and have the starfields match up? I'm not familiar with the crawl generator program but , if this is what you are going to use, then it would make life a lot easier for you if you could render the crawl without the starfield. You could add the starfield in later with one that would help you match the pan down.
And now on to the wording of the crawl.....
The crawl is there to give a slight backstory to what has been happening and then the last paragraph leads directly into the film. The way your crawl is worded you would have to begin the film where Luke enters jabbas palace, cutting out a huge chunk of the movie.
I seriously think you should go back and rethink your wording for the crawl. The second paragraph makes no sense because not once does Vader address the issue of the vulnerability of the death star to rebel attack (unless i missed something or you are planning to add this in your edit).
So don't forget that your last paragraph needs to lead straight into your next shot.