Crossplatform filesystem for RAID? - redoing my storage

[Wyzzy Moon]

Hey all, I am redoing my storage, I already make backups, this is just about the stuff inside my pc for now.

the current situation:

1: 500GB ssd bootdrive for windows (NTFS)

2: 128GB ssd bootdrive for linux (Ext4)

3: 1TB hdd storage drive (NTFS)

4: 500GB hdd for extra storage (NTFS)

 

The plan:

1: 2x 500GB ssd (RAID0) = 1TB bootdrive (NTFS)

2: 128GB ssd bootdrive (secondary) (Ext4)
3: 4x 500GB hdd (RAID5) = 1.5TB storage (???)

As you can see I am dualbooting windows and linux and I would really like to have read and write to my storage drives from both OS's.
For now windows is my primary OS but that might become linux, although I will still use both.
I am hearing good things about ZFS and BTRFS under linux but (native) windows support doesn't seem to exist. 
Writing to NTFS in linux is a PITA, and exFAT works great on both systems but is not great for storage. (and FAT32 has the obvious file size limit) 
What would you recommend? or am I just asking for a perfect filesystem that doesn't exist?

PS. for the raid5 array I am using an old LSI raidcard from an old (dell) server, for the bootdrives I'll just use onboard raid on my mobo.