First things first...The Disclaimer
Remember when you modify a game you DO SO AT YOUR OWN RISK!
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Zesty Gamer - Increase Size of Mass Effect 3 Small HUD and Text
http://zestygamer.com/2013/05/25/increase-size-of-mass-effect-3-small-hud-and-text/
"Drill down into biogame.ini -> sfxgame -> biohud, where you should see the following two entries: safearearatiox & safearearatioy, each with a value of 0.05 by default. Changing these values to 0.10 (or higher) should double the size of the HUD/text, but it won’t get any bigger than that."
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Edit: Nevermind...looks like you did both the safearearatiox & safearearatioy.
Did you try the other suggestions on the page linked above?
Note: I haven't tried them myself, so I do not know how well they work.