My set up works like a charm (for filming skateboarding anyways), and I know it can be much much better, but I'm used to it. A screen would be definitely a good addition, like the t3i and such, but I can't afford a new camera just yet... Here's what I have.

In terms of camera, I've been using a Canon Rebel t2i for close to 3 years now.
Lenses I got Rokinon 8mm fisheye, 17-50mm Tamron lens, and a 75-300mm Canon lens.
Been using a rode videomic for audio.

Got a bunch of videos on my CHANNEL if you wanna see.