It seems like your expenses are probably about $2,000 a month. I think you need $12,000 in the emergency fund. This is 6 months of expenses, and enough to replace your husband's car if it gets to that, or do some substantial repairs. It's also enough to pay start up fees if your housing situation has to change. His car will probably give out at some point before you pay off your school loans.
Grad school Stafford loans are at 5.41% right now. You can borrow up to $20,500 a year, so your may have to get other loans to pay for school. I think your best bet is to keep it for tuition if school something you are GOING to do, and you cannot pay for it another way. If school is a "probably" then put the money in the IRAs. It sounds like you might plan to out-earn the IRA tax benefits eventually. $11,000.
$100,000 for a "masters" with a job prospect of $120,000 to $140,000 almost sounds like law school. You may be right that the jobs are there, you will get one, and that is the salary. But be sure that they aren't tricking you. Law schools said the "average salary" was $90,000. That was 60% of people making $45,000/ 30% making $160,000/ 10% unemployed and not reporting.
Also, search your soul now: do you want to be a stay at home parent/ part time worker? That's cool. It might not be possible if you have loans and are the higher income earner. It might seem sucky not to "follow your dreams", but if you figure 3 years of school + 3 years of working to pay off the debt, you are then 31. If you quit then, you probably lost money on the schooling.
Your Husband will have an income of $30,000-$40,000 and your expenses will probably be about $20,000 a year (or less), right? So you would probably have $5,000 to $10,000 a year to pay for school. That, plus the wedding money could cut your debt figure from $100,000 to $50,000, and mean you can get by without private loans.