Advice on new tournament format. (kinda long?)

OK, so i am absolutely trained in the pokerstars blind structure and freeze-out style of the tournaments that i play that i need some help with how to play an upsoming live tourney that i qualified for. Here's the stats...

210 players with 6000 in starting chips each, one re-buy allowed for $75. (im already invested 70 into the tournament for the qualifier). Pays top 20 with it weighted VERY heavily toward the top 3 (10,000-4,000-2,000-1,500 with 1000 to the rest of the final table). Blind levels are 20 minutes with the re-buy expiring after level 4.

Blind structure
25/50
50/100
100/200
200/400
500/1000
1000/2000
1500/3000
3000/6000
5000/10000.

Should i play "Day one" style of poker for the first four levels due the loose play the re-buys will cause to a point, or do these fast rising blinds force me to play a wider range of hands? Any comment would be very much appreciated.

Emon96