I am a wood rat. Should I sell our house now or later?

I’m not sure if we’re making the right decision. To sell our property now, and build our forever home - which we have already paid a deposit on the land. Or should I wait to sell until the end of the year? And then we have another property which will title next year - which we’ve already paid deposit for.
Should I be more cautious? Or are we making the right choices as we do want to move out of this property and build our forever home.