That thing is huge.personally if I wanted something that big I would just buy the iPad mini or the nexus tablet
Try using wifi tether from Google play
What app are u using I'm using the normal wifi tether on eclipse ics and it seems to work
When I get kicked off 4G at house(I get bad signal) I have - 65 downstairs I get about - 90 its probably an issue with ur phone
You can root it by z4 root I wouldn't recomend it becouse it might mess up your phone so in other words I'm not responsible if your phone breaks...
Here's a youtube video of how to do it I'm pretty sure it works I know its hard for people to join you or your partys here's the link...
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