Well, I think
you should go for SCWCD since the servlets/jsp stuffs are still fresh in you mind.
The one and only book for the 1.4 exam is "Head First Servlets and JSP" by Kathy, Bryan and Bert. This is simply the best.
You need Toncat 5.0 web container also to run the jsps and servlets.
SCJP 1.4, SCWCD 1.4, SCBCD 1.3, SCEA