In all the talk of graphical downgrades no one seems much preoccupied with 'why?'. Why build something and then proceed to tear it down, piece by piece, in the hope that ever more diminished expectations about the final product won't be severe enough to...
Make sure you have enough moves to get the pieces you need.
If you don't have many, don't be tempted to pick up those one-hit bonus pieces - they each cost a move.
Keep well stocked with tools - you'll need them.