We did Mine Train after our BOG breakfast, prior to park opening, but we went from there to Peter Pan, then Haunted Mansion, BTMMR, Splash and I think Pirates....not necessarily in that order after Peter Pan, but something like that. We were done with all that by 11am probably. If you are Rope Dropping Mine Train though, the line for Peter Pan will already be long when you finish so you may have to skip that. You could try to hit some other rides around Mine Train instead of Peter Pan like Under the Sea and Winnie the Pooh then move on to HM, BTMRR, Splash etc. I have seen some people go right over to Tomorrowland and ride Space Mountain with a minimal wait as well.