I completely agree with Guy. An external monitor will always beat the performance of a wifi enabled device. I find the lag between a phone or tablet quite detrimental, as you're not actually watching what's happening in that moment so you don't have that instantaneous time to react if something happens. I purchased an iKan 7 inch monitor that runs off Canon LPE6 batteries, which is perfect because I own a 60D and 6D so I've got a tonne of those batteries laying around. It's quality and performance are great for its price. If you're thinking about future proofing, I would definitely recommend getting a monitor that can support SDI in to use with more professional rigs.
Ooooh I'd love to say both! The C shape handle is awesome! I reckon an absolute must for a shoulder rig. I tend to use my handle on the rig for heaps of low angle shots with my A7s as it has the tilting LCD screen, but the 5D doesn't have this, sorta makes the handle less appealing. Cage would be great to build into the rig for the additional mounting holes, but it all depends on how many accessories you plan to have coming off this rig. If it's just a mic and a led light and maybe a monitor you can easily achieve the same result with a couple of magic arms.
That's because your text tool is still active. If you go CTRL+ENTER that will save and esc your text box. Then you can hit V and it will change to the arrow tool. Then hit CTRL+T to go back to the text tool.
There are plenty of adapters out there on the market, however not all of them are electronic - which means you can't easily control the aperture of your glass. There's no need to use a speedbooster on the A7s as it's full frame - unless you're planning to run it in APSC mode.....which would just make it a full frame camera again so it'd be pretty pointless. As Brad mentioned Commlite and Metabones Smart Adapter Mark 4 are the best out there at the moment. I've got the Metabones and I love it! Works a treat! Though had I done a little more research I would have opted for the Commlite strictly for the huge price difference!
About 6 months ago I managed to get my friends some great second hand cameras, like the Canon 600D for around the $450 price range. I know you mentioned Nikon, but I thought I'd suggest this as well for some difference of opinion.
When I went back to work for my old highschool I got the school to buy 20+ Canon 600D for the students to take stills with and shoot videos for their assignments, as it was the best camera in our price range at the time.
They are a simple but amazing camera, with tonnes of functionality! I think particularly because this is your first camera I'd shy away from twin lens kits, you don't want to be swapping at such an early stage with your camera (in the future most certainly!), go for something like the 18 - 200mm or 18 - 135mm, they are a great "one size fits all" type of lens, ideal for travelling!
Tyler, I just very recently made the switch from my 60D to a 6D primarily for photography reasons but also for video. The 6D is an amazing step up from the 60D in a lot of ways. The full frame sensor creates a fantastic picture! Buuuut I would have to agree with Michael. Build up your lenses before you jump ship to a new camera. I loved my 60D and I used the living daylights out of it for 4 years, in that time I built up my glass collection and slowly you'd be improving your picture and its quality with better glass. What you do need to consider though is this, if you're serious about eventually upgrading to a full frame sensor, start buying full frame lenses for your 60D now, and then you can eventually make the most out of them in the future. I'm talking about lenses like the 24 - 105 f4, 16 - 35 f4, 24 - 70 f2.8. 70 - 200 f2.8 These are fabulous lenses on the 60D and will make a dramatic change in the way you shoot with your 60D. The old saying is "lenses last forever." Invest in some beautiful primes or L-series and watch as it changes the way you view and use your 60D.