3rd option: To have the transporter copy the files to X/Y instead of the cloud storage server. No 2nd 3ds needed, no paid storage required.
If I had to choose though, my cousin has a 3ds and will be getting this game too. He's at my house like 4 days a week, so yeah, easily borrow his for a bit. --- 3ds FC: 0817-3909-5696. PSN Grindpantera. If you add me, please send a PM with your code.