Hi shobhitkh,
From the information that you've provided, you have now scored 740 three times - and with a Goal Score of 730+, your results would make it appear that you are actually performing at your Score Goal level... and yet you haven't scheduled your Official Test Date and you seem unsure of when to do so. Do you not 'trust' these Scores? Have you been taking your CATs in ways that are not realistic (for example, pausing the CATs, retaking a CAT you've already taken, seeing 'repeat' questions that you already know the answers to, etc.)?
The jump in your CAT Scores (especially from CAT2 to CAT3) is rather large for such a short period of time (and from a statistical-standpoint, that legitimacy of that improvement seems questionable). As such, I have a few questions about how you took these CATs:
1) Did you take the ENTIRE CAT each time (including the Essay and IR sections)?
2) Did you take them at home?
3) Did you take them at the same time of day as when you plan to take your Official GMAT?
4) Did you ever do ANYTHING during your CATs that you couldn't do on Test Day (pause the CAT, skip sections, take longer breaks, etc.)?
5) Did you take any of these CATs more than once? Had you seen any of the questions BEFORE (re: on a prior CAT, in an online forum or in a practice set)?
GMAT assassins aren't born, they're made,
Rich