I am going to be installing armory on Ubuntu 14.04 - is it safe to use the instructions in this video?

http://youtu.be/w9TGkUgekLY

Can someone take a look at it and tell me if everything is legit?

What do you guys think is the best for security, installing updates or not updating.  I'm talking about system updates, not armory updates.  I am running Ubuntu 14.04.

What version of armory do you guys recommend using?  The computer cannot run ubuntu 12.04.3, so the stable offline bundle will not work - is it safe to use the alpha offline bundle instead? 

Thanks!

We only have 4 pools and they are getting HAMMERED by new miners!!!!  Network hashrate has increased 50x in the last 4 days and our pools cannot handle the traffic!  Please any new pool would be a huge help!!
 
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