Playing in the WCOOP main event

[Alchemist]

Last night I managed to survive one of the Stars super satellites to gain entry to the O8 Main Event on Wednesday. I felt I played well in it, a little more aggressively than I'm used to but I also got quite lucky at times. Considering I'm a $1/2 player (+3-4BB/100) with fairly limited tourney experience, I'm looking for some last-minute tournament strategy advice.

The sort of things I'm looking for is:
o what sort of hands that would normally be considered marginal would be good for stealing blinds from the CO or SB? What about defending the BB?

o At what point regarding stack size to blind ratio should I start loosening up my starting hand requirements and/or bringing weaker hands in for a raise?

Hell, should I just sell my W$ for a guaranteed ~$500? Right now there's a big overlay in the tourney. 206 entrants, pays the top 27. Lowest payout gets 0.7% or $1750. Should I expect MUCH better competition/more aggression in the Main Event vs. the super sat?

TIA