It will be tough to beat the crowds for ETPE since you are offsite so you won't be hitting these as walk ons but it will likely be the lower wait times than if you waited to ride later in the morning. I feel like if you can keep an eye on G+ and see what you can get, you can adjust on the fly if necessary. Also, keep in mind that at MK, resort guests can only RD tomorrowland and fantasyland so when you enter the park, frontierland is just also opening which is good and bad. see my comments below.
DHS:
Slinky Dog Dash- G+ but it will be gone fast. If you don't get it, then head there first and try for G+ for MMRR.
Mickey & Minnie's Runaway Railway RD- most DHS guests are hitting SDD, TOT or Rise.
ANIMAL KINGDOM:
Kilimanjaro Safaris RD- animals are best to see early.
Na'vi River Journey G+ (not really needed most times, would be better used for EE but may not interest you)
MAGIC KINGDOM:
Peter Pan’s Flight RD, but again, you'll be slightly behind on this given everyone who hit MK for ETPE went to fantasyland so this ride could be 75 min at 9am.
Splash Mountain- G+ (I really only say this because Frontierland is notorious for rides not being up at RD and I feel like splash is one of the culprits. Keep an eye on
MDE and if you have it, Touring Plans lines app, as it will tell if you if splash is operating).
EPCOT: total toss up. If you are entering from future world, or whatever that part of epcot is now called, which I presume you are, you can hit FEA first since again, you'll be behind the crowd on ETPE folks that entered via the IG, so they'll all likely head to Remy's.
Remy's Ratatouille Adventure
Frozen Ever After