Focus god damn it! Lol
Congrats on your first Rigol video. In addition to Danny's comment, I'd also suggest you get yourself a cheap video editor. Something like VideoReDo will do the job, for about 50 bucks. That way you can easily trim out the embarrassing spots, and not make your viewers sit through while you dink with something. You can also relax a bit, and not worry about getting everything perfect for 12 minutes straight.
I will take issue with a couple of your comments though. You claimed that the 1000Z was only suitable for hobbyists and beginners, and I would not agree with that assessment at all.
You also stated that Rigol was poor in reliability and support. While some might (reasonably) argue that Rigol support is not the best it could be, I don't think their product reliability is bad at all. In my own experience, as well as reports I've read in forums over the past 6 years, it's been quite good.
So to say that this is not a product you'd want if you needed professional quality and/or reliability is misleading, IMO.