Yeah, Cesar, have faith-- it will come together pretty nicely, I think. And yes, you are in the right place. If you're not completely crazy, get ready to become so. ;-)
I'm wondering if you need a new burner tube, though. Looks like the Weber ignitor is still in place, so I would imagine a new one would fit in there just fine.
The nice thing is that Weber currently has a free shipping code (check the Trading Post for that info), so you shouldn't feel like you need to get your complete parts list all together at once. Maybe just order the ignitor and see if it will work with your current burner tube. Of course you'll need a new regulator to make that work, unfortunately.
Best wishes, and let us know if you have any specific questions.