Storing that much data on Wasabi would cost about $1,700/mo.
If it’s that important, rent a VPS, connect Rclone to Google Drive and Wasabi, and transfer.
Even 5 Gb/s would get it done in under 5 days and VPSes are usually faster than that.
I hope someone has already made this suggestion to him.
Edit: Forgot about the daily download limit.. ugh. What a pain in the ass.