IMO for 5 gal batches you need 10 gal kettle.
I would incourage you to consider MagaPots.
I would say spigot is must have and thermometer is nice to have.
Check MegaPots at Midwest Supply or Austin Homebrew Shop.
One of "Cloud" storage provider is BropBox:
https://www.dropbox.com/
They have clients for Windows, Mac, and Linux. When you install the client software it will add another folder to your file system.
Whatever you put in this folder will get copied to the DropBox server.
So install DropBox on...
This model is 24V model.
Most likely you need 120V model A419ABC-1C:
http://www.energysavingcontrols.com/Johnson-Controls-A419ABC-1C-Electronic-Temp-Control-P95.aspx
Still price is only $56.
Or buy it from Ranco Store for $65:
Johnson A419ABC-1C 120/240V Single Stage Temperature Control.
http://www.rancoetc.com/johnson-a419abc1c-120240v-single-stage-temperature-control-p-111.html