I have to say that im with slice on this one. Passing airline training is not that difficult and any pilot of average skill can pass providing they put in the effort while at training.

Just tell yourself...look at all of those 300 hour pilots hired at these airlines with barely 20 multi and no rj course and they make it. Are you saying that they can do it and you cant? I know personally of people who have taken an RJ course and still failed training. In no way would I really even say that it is an advantage. In a ratio of cost to benefit gained id say that one is a lose lose situation. An example of a good investment is the turbine engine manual book (forgot the actual name) it will cost a few bucks on amazon and work wonders.