gluglug laptop + trisquel + tbb would be a good start... but not the end of
it.
If you wanted to have a secure system that could protect your private
communications you would have to go a greater lenght.
I would suggest:
1. firewall, close all ports except 80 and 443.
2. use tbb, thunderbird with torbirdy, pidgin with tor settings.
3. use apparmor profiles in each of these apps. Whonix has good starting
profiles if you want to work on it.
4. download libre linux kernel, patch it with grsecurity patches, install.
5. add encryption (full disk and GPG encyrption).
6. Set up RAM secure clean in shutdown.
Without this, your system would be a easy target.
Also, nothing beats the fact that someone can just kidnap you, beat the shit
out of you, and force you to tell them your password. So, a good home
security alarm is a good thing to add :)
Does anyone know a good alarm to the house that works with free software??