Canon 600D is a great camera, even the younger brother of the 1100D will allow you to take wonderful photos. Here Canon bcra group vk.com/youcancanon
There you can see examples of photos and if the work is not signed, it is difficult to say — it's 1100D or 7D.
About optics and a small budget, if you want to shoot "landscapes, portraits, macro
Landscapes. No matter how hayali the kit lens 18-55 IS, it copes well with their tasks and the ratio quality/price it has no equal at the primary level. The difference in price of the carcass and carcass + a whale = 3-4тр. Lenses, which here advise are much more expensive, and they are certainly better, but not far this procedure.
Portraits. Need a Canon 50 1.8 ef, svetosilnyj fix the entry-level 3500 — 4000 Tr, in the group Vkontakte above view examples made with this lens.
75-300mm is not needed for your needs.
I considered to myself Canon 1100D, 550D, 600D, Nikon 3100, Nikon 5100. From Nikon a I refused because of the 30fps when shooting video at 720p, I wanted to experiment with slow motion
, for the same reason disappeared 1100D. For video the autofocus is mostly used manual, because auto contrast slow from Canon and Nikon. In the end, in the end, I decided not to pay extra for the swivel screen (and the external ignition PY) and the choice fell on the 550D, although in some places the screen would have been useful.