PSO
I started my 1811 career with an OIG in the SDNY. Are you in SDNY or EDNY by chance? There are a lot of opportunities to the get experience/training that are much cheaper and more practical. I will tell you right now, while the CFE looks nice paper, in the two OIG's I have worked for and the several others I deal with daily, and it is what we call "resume candy." Looks nice, will give you some fundamentals, but won't help you on most federal fraud cases. It is something most LEO's should try to get before they retire because in the private world it holds more weight.
Don't focus so much on fraud investigations experience. Focus on catching people in lies. That is really what white collar fraud is about. Some have more lies than others, but you can do it! You don't need a CFE to know how to work a workers compensation fraud. If they are claiming they can't work due to an injury, your investigation should be if they are working today. A CFE isn't going to help you. Old fashioned police work will.
Also, just don't take any 1811 gig. Think what you like doing and what interests you. Then go for agencies with a mission that shares qualities with what you enjoy and what you want to do. If you are looking for some info, you found the right place!
-In God we trust. All others, put your hands on the car and don't move.