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Here are my thoughts:

$120 for Coolant change - wait as mentioned at 192k if FL22

$90 for Power steering fluid change - probably not a bad idea to do this especially if your steering is feeling...

I'd service brakes according to the service schedule:
http://www.mazda.ca/MciWeb/pdf/parts/en/Mazda3Maintenance.pdf

But you can get it done cheaper by a mechanic you trust and will do it...