Only think i doubt is lin having full flying / levitate team. I feel that if that is the case, it would be too easy just to set up trick room, especialy since it's duration is boosted in this field to 8 turns.
I think she actualy might have gossip gardevoir on her team, and Arc beside her hydreigon. I would bet at her using other creation dragons, especialy giratina.
Also i think Ana will be the last of E4, since her field can be transformed into New World field. After battling her Lin could arive and use pulse-arc to change field or stuff.
I predict that whole E4 would go like this:
We climb E4 from labradora, and fight Heather in the mountains. Than Bennett / laura inside. After that something happens, and we have to return to reborn, (lin finaly opens the gate inside city?).
El tries to stop us in holy field, and than inside we finaly fight Ana on startlight field, before lin arives and changes it to new world.