I'm really sad that OP came here for a bit of advice, but it's turned into a bit of a pile on.
This isn't what she asked for or deserved.
OP, I hope you've managed to take the good advice here, and shut out the judgements.
I will tell you as I tell my friend who is torn between being a SAHM or keeping her career in law.
As long as you are an involved committed parent when you are around, that's what matters to your children, that they know you will prioritise their needs, and love them.
The upside of your big career is you are demonstrating to them what a successful life is, and that you matter as a person outside of being a parent. You will open up opportunities to them with the money you earn, contacts that you have, and general life experiences you encounter and pass on.
In 13/14/15 years, you will be proud of the example you have been to your children as they start to create ideas of what their life will be when they embark on their own careers, whilst many of the SAHMs will be struggling to get back into their old careers, you will have years of flourishing in your field.