Should I watch tsubasa Revelations/ where can I watch them?

Ok so I finished Tsubasa reservoir chronicle yesterday and by the last episode they made it pretty clear that it was Far from over. But then i know there are only about 3 more episodes to watch after.....I know the manga is muchhhhhh longer than the anime (at least that's what I've heard I've never read it) and there's only like 3 episodes so there's NOOO WAY they could possibly explain everything and wrap it up in such short time so I'm wondering if I should just read the manga or go ahead and watch the "revelation" episodes. Now if I do watch the revelation & then after that watch the shunraiki episodes will i understand them and are they worth watching? Or should I just read the manga then watch it to understand? Also can anyone tell me a link/website where I can watch the revelation and shunraiki episodes in ENGLISH DUB? PLEASE AND THANKS FOR YOUR HELPPP =)