I’ve been doing something similar until recently with an old Cyanogen-modified Nook HD. It’s been a good lightweight backup and travel device combo for trips of two weeks or less (I like to travel light).
The things that made the difference for me, in addition to a similar Bluetooth keyboard, were a Bluetooth mouse and remote desktop apps that let me connect to my own home machine and clients’ machines that do the heavy lifting when I need more processing power and RAM. A nice big microSD card for local storage is also useful.
I’ve been pleasantly surprised by how much I’ve been able to get done on it. There’s a tradeoff, of course, but if you’re not doing design or multimedia production it’s more than adequate as a replacement for a work laptop to do writing, research, financial stuff, coding, etc.
If you want to really up the game, get an HDMI adapter for the tablet and hook it up to an HDTV or spare monitor wherever you are. With an adapter you can also use a phone to make a similar DIY thin client.
