Well theres the Mod to actually Remove Party Limit.. (i never Tried..) but Bunch of People use and says it works ok.. just some bugs here and There.. But i Advice that if yu really want to use this Mod to actually bring only 3 companions as origins the rest of the spots just give to Hirelings;; i bet this way nothing will broke or Bug like Banthers and stuff like that.. (and just to Be Safe Make a Lot of Saves Before quests.. if stuff go wrong just Remove the Rest of the party and make with 4) (i saw some reports that this mod bug Mayrinas and the Hag Quest when yu do with a Bunch of companions.)