Evaluate who has better performance for you. Box, Dropbox, Google Drive, OneDrive, pCloud, Tresorit, Backblaze, Amazon S3, Amazon Glacier (for long term only), etc.
Keep in mind that many providers charge different rates to store vs. different rates to export data out (egress) for your calculations.
Editing 4 years down the road, offload it off the cloud to a local drive, do your edits, then upload it back. I don't know your workflow/storage processes as far as optimal performance, so it's a little hard to say, but given the file sizes and bandwidth required I strongly suspect you're going to need to do all edits locally.