Capital gains rate for condo sale upon retirement

hi all,

My question is in regards to capital gains.   I was thinking of delaying a sale of a long term rental upon my retirement from my job.  If I do this in my first year of retirement with no earned income what is the long term capital gains rate I will have to pay.?  I'm trying to figure out ways to lower my tax rate.  I'll have gains of approx 300k and 15yrs of depreciation recapture to think about..

Thanks