Don't apply R3 if you can afford to apply R1 the following year. If I were you, I'd wait, especially since you're still young.
As for your list of schools, they're ambitious - no real safeties, and most are likely going to be stretches. Your sweet spot will be schools outside the top 8, such as NYU, Cornell, Yale, Ross, Darden, Duke, Haas, UCLA. And yes, you would be at a disadvantage compared to other finance types not solely because of your employer name, but because most IB types will have bluer chip resumes overall (went to more prestigious undergrads, worked at more established or prestigious firms, etc.) - and yes that does matter especially in this environment where "employability post-MBA" is a bigger concern for many b-school adcoms (all the way to the top H/S/W - yes, they do care!) -- and by and large, those with bluer chip resumes tend to be more attractive to post-MBA recruiters *assuming* these folks with the blue chip resumes have reasonable expectations (which in these sobering times is happening more and more - gone are the days where some Goldman/KKR analyst thinks he can walk on water).
In any case, where you apply is really a personal decision. Some folks only want to apply to "stretch" schools and are comfortable with the possibility that they won't get in anywhere. Others really do want to get in somewhere, and will apply to a wider range of stretch, sweet spot and safety schools.