ReadyNAS® Pro vs ReadyNas Ultra Plus ??

I could use some help in deciding on the ultra 6 plus or the pro 6. I haven't been on the forums in over 18 months, so forgive me if my information is dated.

I currently have a NV that is 97% full. I would like to migrate all the data from the NV to the plus/pro. (I assume that I will have to drag and drop??) Once completed, I would like to back up the pro/plus via snapshot. Next, I would like to use the NV as the backup target for the pro/plus and be able to 'land' or 'replicate' the snaps onto the NV. The NV will stay local for about 3 months and then will move to another location for DR (no vpn, internet only)

I do want all the software functionality that the ultra plus offers, but need snap, ftp, performance that the pro offers.

A few questions:
Can I get all the software/add-on’s that are offered for the plus on the pro as well?
Is it possible to take snaps on the plus/pro and 'land' them on the NV?

Thanks in advance for your comments and direction!

regnav