I sold large amount of capital gains. What are my options to reduce taxes

I make $85,000 and I sold 93,111 in total gain so my aproximate modified adjusted gross income is $178,111. I know I will be taxed at 15% for the long term gain and a larger rate for the short-term. I own a home with a $260,000 30 year mortgage that I bought in 2017. Are there any ideas to reduce my tax impact? 

Also, not tax related, I would like to put some of the profits in a Roth, because my salary is over the maximum would it make sense to do a backdoor Roth IRA?

Approximate Modified adjusted gross income
$178,111
Total Gain
$93,111.06
Short-Term Gain
$5,974.93
Long-Term Gain
$87,136.13
Salary
$85,000