Update: I was unfortunately not aware of Shamus Young's severe criticism of Fallout 3 available here to link in the original piece and I regret that. It dovetails rather nicely with what I've written and it's much better executed than my piece. I strongly recommend anyone...
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.