First of all, congrats on the 730!
I'm no GMAT expert, but I'll provide some thoughts based on what I've read, heard, etc.
How influential is my IR score going to be?
1) Are you going into consulting or banking? I read an article that IR scores will be looked at for recruiting purposes. In fact someone from Bain & Co. mentioned that they will be screening out applications based on IR score.
2) I've also read that Stanford came out and said that they will not be judging applicants on IR scores for a few years.
3) IR has been around for only 2 years so a) all applicants haven't taken this portion of the test and b) that's not enough time for schools to judge how IR scores correlate with success in B-School(jobs, grades, etc)
Are my Quant and Verbal scores good enough for programs in INSEAD, IE, IESE, ISB, Columbia, HAAS, NUS?
1) If you look at the website for each of these schools you will find the Median 80% of GMAT scores.
2) Are you an Indian IT Male? From my understanding that's an over represented applicant pool and the higher the GMAT, the better. If not, you're going to have to find a way to differentiate yourself from the rest.
3) Are you part of an under represented minority or under represented applicant pool? In this case your score may mean more considering your unique background.
Again, I'm no expert, but I wanted to provide my thoughts.