A lot of guys I know that went in this direction (or wanted to) got there via Pel-Air or Australiasianjet.
At Pel-air you'd start off as a Metro FO on the night freighters and work up to a command. Then it was a westwind FO slot till the left seat became available.
Provided you didn't go looking for a ridge or take it for a swim, most guys went onto better things.
The other option was Ausjet. You start your way doing 404 tours around Australia, end up in the kingair while do a bit of citation flying. Provided you stick around you'll see the left seat of a citation in a few years.
These would be the best two places to start, although you'll need an ATPL and 500 multi to get your foot in the door.
Have fun, like everything it's a hard slog and does not come easy (unless you hand over a fistful of cash and sell your soul)
