If you took $32,000 with the stipulation of three weeks vacation (which is negotiable), you effectively lose $1,700.00 ($300.00, 15% went to taxes).
$34,000 equates to $16.34 dollars per hour. When you subtract 80 hours vacation from the standard 2,080 work hours per year = 2,000 actual hours worked = $17.00 per hour.
$32.000 equates to $15.38 per hour. This time your hours worked would be 1,960 hours worked (2080 - 120 = 1960) which equates to $16.32 per hour for every hour worked.
Either way, your bottom line are pennies apart.
This is a neat question because if you take your salary alone, not to include your husbands salary, you are in the 15% tax bracket. However, when you combine your salaries, you're probably in the 25% tax bracket.
That said, you would be better off with $32,000 and 3 weeks vacation to reduce your tax liability which is $300.00 at $32k and 15%, or $500.00 at $34k and 25%.
At 34k you could end up paying more taxes which would hurt the hourly earnings.