The common strategy for 10-seater SnGs is this:
Tight early, loosen up late
the way i play, and it works quite well for me, is that until the table gets 7 or 6 handed, i won't play anything but the top 10 hands. (AA,KK,QQ,AK,JJ,TT,99,88,AQ,77)
I of course will mix it up with AJ/AT type hands if im in LP and the blinds are weak passive players. Actually i'll raise with anything if they're passive enough.
Then slowly i'll start to open my hand selection up.
When you start raising hands, people will be too afraid to play a pot with you because they know (from your earlier play) that you are a tight player, and won't raise or call a raise with a weak hand.
This makes it reeeeal easy to steal the blinds when they start hitting 50/100 and up.
Loosen up to KQ-type hands, then down to KJ types, then QJ/QT/55 types etc etc.
Eventually it gets to the point (like at 3-handed) that your opponents are too afraid to play a pot with you, and they are just sitting there folding until they get a big hand.
Anyways, this is the type of strategy that is widely used and believed in for SnGs
Your strategy is very much the same, thechern - but some hand selection differences (would you limp with JJ or TT?? I know i certainly wouldn't)