@AuntB_luvsDisney was my guru on this in 2016. I’ll try to share some of that wisdom.
Book your MVMCP on dummy profiles (or a dummy account if too many profiles bothers you).
This way, you can book your party FPP at 30 days on that ticket media that is not linked to a hotel stay.
By doing it like this, you will be able to get rolling 4th FPP either in AK if you need them or you can make some extras in MK on your regular magic bands. You will also have those 3 others on the MVMCP cards (that’s what I was sent) already in place.
Your MVMCP FPs should ideally go from 3:30-4:30, 4:30-5:30, and 5:30- 6:30. If you have something near the front of the park for your first (like Meeting Mickey or Tink), you could start your window a little earlier since it won’t take you that long to walk there.
I know that they start kicking non-party guests out (lovingly) at 6 pm instead of 7 when I went so someone else may need to chime in with better FPP windows if necessary.
I hope this helps. I’m sure someone with more recent 2017 MVMCP data will chime in but this is my 2 cents.