It's not THAT more difficult, in many aspects i think it's even easier (Just think about the stupid runup in a CB). It just needs a little more attention and "the gentle touch ;-)"
About the more safe aspect: I'd rather have an engine failure in an R22 than in a CB300, the Robbi glides at least a few feet, i agree that its easier to autorotate the CB if it comes to RPM management, but the CB also glides like a rock..........
I don't really get your problem, if you wanna find a job, you need to build some hours first, so why not take the Robbi, invest a few bucks into an instructor, and just go and fly it. What's wrong with having an instructor next to you for a few hours?
That's the same with all machines, you wouldn't move from a R44 to a AStar without getting some proper training, or even from a AStar to a CB300, or whatever......