Do you want to be a landlord for the rest of your life? Literally to the day you die? If so, look into the 1031 exchange with a cpa. It will allow you to pass on property to future generations without anyone having to pay the tax.
If you don’t want to be a permanent landlord, just pay the tax now. If you 1031 exchange, and then sell that future property, all the tax on the profit of both properties comes do at once. And that can push you into higher tax brackets and actually increase your total taxation.
Either way, consult a cpa before you sell. Most people forget about depreciation recapture and that can be just as big of a tax impact as the actual capital gain.