Currently we are running CI builds through Travis CI and push to multiple AWS instances. We have fail over RDS setup as well. The costs have come down on AWS time and are not far out of line.

You don't, at least not for cheap.
The only way you would be able to do something like this effectively would be to run another raid along side of your working raid and backup off to that
Still, holding onto 20 TB of data is overkill.

I would recommend bringing that down to a more manageable size for a home user and only backing up the items that are not easily replaceable, like personal photos, movies and documents. Backing up your movie collection or porn collection is just a waste.

3 x 23.5 Wide Screen LCDs on my desktop.
1 x 22 in Wide Screen LCD on my server rack.
1 x 18 in laptop screen.
1 x 10 in net book screen.
2 x 19 in LCDs on office computer.

... of a larger bank account.

They seem to just want to crank out a new OS as soon as they can leaving users to suffer with the results. Take some time, and build in some value and strength to the OS before moving onto the next one.

I have this set up as well. The executable is stored online on my server and I have a simple page with a link to it.

They download (or just straight run it) and it leaves no foot print after the fact.

You just need to have static DNS at home, dyndns.org or something of that nature.

Throw in a Net book with all the data you want and the power cable.
I would like to think that we will still have power outlets in 16 years.