After planing the new structure, installation takes place. DIY or pro - it's your choice.
I am using what you already have, first: your tables, chairs, boxes, shelves, etc. My focus does not lay on interior design.
It is essential to find a place for every object that is going to stay in your new dancing space.
After having finished the rearrangement, take your time to discover and enjoy the new space and begin to connect the outer space (your rooms) with your inner space.
See, what comes up in terms of decoration. Now it's time to give that space your personal touch.
During the next weeks, observe what else is going on in your life. There might be some changes elsewhere to be recognized.