Root [MetroPCS/CDMA] Please help a newbie with a brand new cdma galaxy s3

Hi, thanks for reading. I have just purchased a brand new galaxy sIII cdma for metro pcs. its never been connected, basically brand new. I have the android version 4.0.4 and my model number is sch-r530m.

I am looking to replace another phone in which I had wifi tether and was able to use as a hotspot with my $60 metro unlimited plan.

any ideas as to what I should be looking at? the tether is the most important feature for me, I would like to remove bloatware as well but thats a distant second.