If it was me, I'd do it slightly different than Hydroguy. (proving that even though i agree with him 98.66% of the time....we have different opinions sometimes

).
If we were indeed among the first few families at the turnstiles & walking with a purpose to PP, then I'd have one adult (yes...i know it's a sacrifice) veer off to nab the ST FPs while the other 3 continue on to Peter Pan. I say this because PP is a fast ride & waiting even 2-3 min. costs you 1-2 rides during MM because the line builds so fast. After the 3 finish PP...... the FP collector can hook back up with the family at Dumbo or Alice (which ever is second)
Either way you do it, please report back.
Thanks.