math and strategy for a strange structure.

[BUD]

I have no experience in no limit tourneys. And my wife let me know last night that she wants to beat her fellow employees tonight.

It is a $50 buy in with 75 inexperienced players ( I am assuming a little here). The strange part is that there will be no blinds, rather $1 antes. I know you guys are math / poker geniuses. Just wondering how this would change strategy. I can see some obvious things, but thought you would have some profound insight. And would help a fellow 2+2er out.
thanx
bud