Hi Andrea,
I would be looking for second hand HEQ5 mount and either an 8"newt or a ed80 refractor (or similar).
I'd then start with a DSLR with appropriate connections. you can buy a guide camera setup afterwards there is no need to rush for that.
here is an example setup around your price
http://www.iceinspace.com.au/forum/s...d.php?t=137162
Russ