Installation of non-mobile applications

[Kernal]

Hi All,

I'm considering replacing my current laptop with an Android tablet, but there are some applications I need to be able to run that do not (as far as I know) have Android ports available. Many of these are standard and simple installations for normal Linux systems; can I install them on a rooted android device?

Examples include:
LaTeX (VerbTeX a poor but acceptable substitute)
ROOT (CERN data analysis package)
SSH (ConnectBot works; does it include X11 forwarding (-Y option)? Sounds like it isn't, because X11 isn't present in Android.)
Even something as common as gcc

Alternately, it appears possible to just run a virtual Ubuntu on an Android machine, shown here: How to Install Ubuntu on Android! | Android+Linux=AndroLinux

Any insight/advice?

Thanks,
Kernal