re: Best Long Term Storage Solution, Videos, pics etc?

Carbonite's $59 plan only allows you to sync what's on your internal hard drive, not any externals. You pay more to do that. Cloud storage is a great idea but never put all of your eggs in one basket. Keep copies in Dropbox, Google Drive, etc. instead of just one service.

The rule of thumb for things you really want to save is 3-2-1. 3 copies of everything, 2 different storage mediums, and at least 1 copy off site somewhere else (bank vault, friend's house, etc.)

It's going to be really interesting in the next few decades as people can't retrieve their kid's photos because a hard drive had a head crash, they can't locate the original drive, etc. Most people are extremely lax in their data management policies.

Depending how much video you're going to be moving around, you could look at a NAS, network attached storage device, or Drobo (A pretty simple to use version of a NAS) as well as maybe a simple hard drive you keep offsite. It doesn't exactly fit the plan but is a way better option than most people keep. If you want to be even safer:
1. Back up everything to the Drobo or NAS.
2. Make two copies to other external drives or such.
3. Take one of those copies off site somewhere and rotate it with the other regularly.