What a waste of money, you've got the hardware sat round not doing a lot, not to forget the waste of electricity, this looks to be a one off or very rare situation for the OP so why would they not use an off the shelf option that is very easy to use
At 50w (a rough guess, it's actually less), it costs about £3.60 a month to run a laptop 24/7. It's running several websites (HTTP server), an FTP server, Ventrilo server (voice coms for gaming), bittorrent client, Skype and 2x security webcams.
All of which I have 100% full control of, my files are not located on unknown servers and when im home I use it for other stuff when my main PC is running applications in full screen.
It's not a "waste of electricity" because what it does would cost A LOT more if done in any other fashion.
I have an old Sony hi-fi, which for some strange reason uses 40w in standby, most people would never think this and simply leave it plugged in.
Got security lights on your house? They use about 10w when the lights are off...... Just sitting there doing nothing.
Where as many people think "OMG it has an LED it must be costing a fortune!!", I actually understand exactly what my electricity costs are.
As someone who grew up with a father that used to follow everyone around the house turning off lights, leaving you standing in the dark at the top of the stairs and then went berserk when my new PC tower had lots of LEDs on the front, I made it my business to understand the truth about this stuff.
If I only wanted an FTP server, then i'd buy a cheap Android tablet to run it from and simply leave that at home instead.... Hell i'm pretty sure my old smartphone would be sufficient, with the addition of a good SD card and that wouldn't use much power at all, maybe 2w on the charger.