We go to TSMM and ride 2-3 times, Screamn' and ride 1-2 times (its our son's favorite ride) and then walk over and grab a FP for RSR and then head to Soarin' every morning we are in DCA. You could get a FP for WOC early; however we traditionally do a dinner package so there is no need. A bonus for us that saves a bit of walking is that our 8 year old HATES TOT so we don't have to deal with that FP or early morning need. If it's an early entry day we typically hit the FP machine as the crowd is walking our way as they don't open until regular park hours. Although the last time we were there TSMM was down for most of early entry, so it could happen to any of your "first" choices.
Mike