G'day,
I'm far from an expert on the issue, but have seen people take quite a few different paths to get that first job so here's my 2c worth.
Money (and/or time) are always going to be the restrictions when trying to work out a plan of attack to get into this industry, but if neither were an issue, this would be my order of priorities -
1. MECIR - As EngineOut says, it is invaluable stuff, and will polish up your overall flying. You'll find accuracy will improve, you will be more confident on the radio and your professionalism on the whole will increase dramatically.
2. Get some parachuting time. Usually this will be in C182s or C206s and will be very handy when trying to get a charter job up north or west. Get as close to 500hrs total if you can, once again this depends on how much time u have up your sleeve.
3. Do the instructor rating. Instructing to get your first 500hrs is another option. It gives you some flexibility as well as you can perhaps move into a Check and Training role later on. Be fair on your students though, and approach the task as one that you really want to do and enjoy it, don't just treat it as an hour building experience.
4. At your experience level, the ICUS is a waste of time. It's not going to increase your chance of employment dramatically. It will be handy later on though when you need a little more multi or IF time and you will learn a lot, when the time is right.
In the end it comes down to whichever path you want to take - bush/charter or instructing. And a bit of both can't be a bad thing either.
Cheers,
TL