I don't think you really need to be at the front of the pack. Think of it this way...
You arrive at 8am so that you can be at the "front of the pack". Wonderful. You wait 60 minutes standing around waiting for the park to open, then make a mad dash to FEA. So does a hoard of other people. Say you still get there quickly and your wait is less than 5 minutes. To sum it up, you got there extra early in the morning, had to make a mad dash to the ride, and when all is said and done you still "waited" a total of 65 minutes. Another alternative...
Show up at park opening, 9am. Therefore, you're not just standing there waiting for the park to open and doing nothing. Make haste to get to TT or Soarin'. Ride them standby. Your wait should be less than 20 minutes for either of them, and now you've completed a Tier 1 ride. Or, if you don't want to wait in any kind of lines at all, skip those tow and get on SE or something like that. No standby whatsoever, just walk right on. Then get to FEA by 9:45am. From personal experience and other people confirming the same, you will wait 30 minutes, maybe less. So in that scenario, you get to sleep in an extra hour (or have a more relaxed breakfast, whatever else...), maybe get on a ride or two, make a more casual stroll to FEA and have a wait time of only 30 minutes, vs 65 minutes trying to be at the front of the pack.
This is the primary reason we've given up doing RD, for the most part. Not that we would never do it again, but for most rides, it wouldn't be worth it. 7MDT may be the only exception I can think of. It's a madhouse within minutes of park opening, so that's either RD, very end of night or FP+.