Thanks for the advice, but isn't IR like plastics level competitiveness?
This is the first year it's offered so nobody knows what they're looking for. I can tell you my step 1 was 230s, step 2 250s and I was dead average in my class at a top 40 med school. I was more successful than most in getting interviews. Probably because I did a dual degree program which gave me time to get my name on a couple papers and present at a conference (surgery related actually)
If you find that you really like it, try to get involved in the IR community to show dedicated interest (particularly the resident fellow section where you can get your name recognized by some well known PDs). If you love IR but worry about your competitiveness, think about a professional loa that can also give you more time to do research and be involved. Also, away rotations can help.
All that said, you can do jack ****, match with no problem in anesthesia, and get a cush job where you barely have to think straight out of residency. I know a girl who did that and started at $500K in boo foo Indiana. If you actually like medicine, then think about IR. Sorry if I offended any anesthetists out thurrr