I bought a GH4 last December and don't regret it one bit. I actually like it better the more I use it.
Great video quality,
Somewhat future-proofed with higher resolution and quite good bit rates,
Amazing choice of lenses,
V-Log soon (Hopefully),
Batteries that go forever (You can almost shoot an entire day on 1 battery, around 5/6 hours on average)
I would definitely recommend it.
I have a 60d (with Magic Lantern) and I think they are quite limited. You can get great quality out of them, but I'd go more for the GH2/GH3 as I've seen much better footage from them.
I have no experience with the GH2/GH3 as a disclaimer but what I've seen from them over the Canon's blew me away. You could even look at some comparison videos and work from that as well.
I don't think the smaller sensor on the Panasonic's should be a problem. If you shoot in daylight or light up properly you'll never have a problem. When I was getting my first DSLR people were going on about sensor size and I regret listening to it. It has it's advantages but it can be worked around easily.
Unfortunately I don't have much money to spare but I've pimped it out on Twitter. Hopefully you get some money from it.
Feel free to follow me: @ando913 ;)
I procrastinate in the sense I leave a lot until the last minute, but I find I'm better this way. If I do everything early I get complacent and don't seem to have as good results.
Everyone is different in that sense I suppose.
I use the Sennheiser ew100 g3 for pretty much any project I'm on. I think they're mainly for ENG but I've used them on films and with the 'quiet on set' call they are completely crisp and pick up very little ambient noise.
Here's an example at an event with about 100 people and loud music playing https://vimeo.com/125145726
As you can hear it's quite clear even with all the other people and music.
I have another example from a film somewhere. If I find it I'll put it up.
There's so many mics out there that . I've seen a few of Guy's posts and he seems quite educated so you probably won't go wrong listening to him.