My father-in-law thanks you, I'm sure.
If you are used to living happily in moderation, and don't have any debt other than the student loans, there's no reason to panic. Taken by itself, 500K seems like a lot, but when looked at in the context of the salary you and your wife will be making and the lifestyle you two lead now, it's totally doable. The only reason you'd get that much in loans is if your pre-education self was like "I KNOW I'll be making enough money to pay these back one day."
Another thing a finacial advisor might be able to do for you is consolidate your loans by paying them off through a lower-interest loan. So that way you'd owe (say) Edward Jones 500K at 6% intrest instead of Al's Pawn, Bill's Savings and Loan, and Bob's EZ Money 200K each at 14%. Finacial Advisors are your friends!!!
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Sage knows our mythic history, King Arthur's and Sir Caradoc's
She answers hard acrostics, has a pretty taste for paradox
She quotes in elegiacs all the crimes of Heliogabalus
In conics she can floor peculiarities parabolous
-C'hi