Just realize that to transfer 1TB of data at typical ISP speeds will take many days.
Not sure why you're being downvoted. In Australia this is so important to consider.
Are there any things to know about settings images to 'private' on Flickr?
Photos have lat/lon/timestamp in EXIF. You're uploading a track log to them.
Even though location is embedded in EXIF, you can disable geolocation feature in Flickr's privacy setting, so that it won't be in the photo that is displayed on flickr. But yes, it does keep EXIF info in its database. For those who are paranoid, either run exiftool or imagemagick to strip off all EXIF before uploading.
Just make sure you understand the privacy repercussions of hosting your data on Flickr.