my approach to this would be: first remove everything that can be removed. You want space.

next up, most pipes have some movement room. The only ones you need to be carefull with, are the water lines.

Adding on to that: water pipes aren't as dangerous as you might think. You can always remove them, and reconnect later. worst what could happen is a wet floor. Just make sure, befor you start doing that, you need to add some endcaps on the open ends or you will have no running water untill you're done.