Well, i am still to go with some important chapters for preparation of SCJP 1.4,
The only thing which can drive me for Beta exam is the cost factor but i think more than the money factor what important is the knowledge, getting certified is not my only aim, to gain more knowledge through it is important.
I think i may not devote myself properly for this Beta exam in this short period, so better i will chuck it for time being, lets give the 1.4 exam well.
Thats what i think.
Well, Rathi as Nick said
If you know 1.4 well, it is not difficult for you to pick up 1.5.
So, if u feel u r ready with 1.4 u can head for 1.5 Beta,
All the Best