How much other income do you have besides the LT cap gains?

If at any point in time your second home was a rental, a portion of your gain may be taxed at a maximum tax rate of 25% for depreciation recapture (unrecaptured section 1250 gain from selling section 1250 real property). 

• For additional information about depreciation recapture please see IRS Publication 544 Chapter 3, page 27.

When you look at that $75,780 figure remember that, for purposes of determining your LT capital gain tax bracket, your LT capital gain itself is added to your ordinary income.