Path of Exile 2 Early Access - PS5 and PC

hello
If I want to play at PlayStation 5 and PC I have to buy two supporter packs or single one?

my gameplay cases are:
1. play solo at PC
2. play local co-op with a friend at PS5

Which ones should I choose to cover these?

According to the info I've seen, cross progression will be available upon release, along with local coop with a friend on game consoles. So, you only need one supporter pack to cover both platforms you will be using.

However, I haven't heard if early access is going to be on PS5, so I would plan to start your journey on the PC.

That we need to buy 1 or 2 supporter pack for early access is my question too, also since my pc works with coal, can't do some endgame content like delirium maps on pc, so I would like to switch to PS5 whenever needed but not permanently, and since I know Sony is a jerk and won't let me use my stashes from pc I would like to move items I get to stashes in pc after doing those endgame contents via normal stashes or character inventory is it possible ? I would be glad if GGG support can confirm or deny it