Adjusting for one seat paying, ultra turbo structure

[Rupert]

My local poker club runs sit and go's for £22 buyin, with one spot awarding a seat worth £200 (10 runners). The structure is awful:

10 minute levels, 1000 chips
25/50
50/100
100/200
150/300 [sometimes]
200/400
300/600

What basic adjustments should I be making. The players are all absolute crap and have no understanding of ICM etc, just tunnel vision (oh these are my two cards? without consideration of what others may have/betting before them).

If someone raises to 150 in EP, on level 1, should I just let go of most PPs? Once it is 150/300 or 200/400 I figure to just shove any 2 when i'm first to open since their calling ranges don't adjust seems correct?

I figure in general these would be high variance sit and go's but I play them anyway since there is no other game running.

Thanks in advance,
Rupert