You want to have a reason for 3betting light in the first place, if you do have a good reason then...
Once you 3bet preflop with 30 bb in a tournament, we have no decision left on the flop.
Usual scenario.
villian Raises 2-3xBB you 3bet to 9BB putting you at around 21 BB, the pot is now usually 18-20BB depending on antes, so it's pretty much setup for a flop shove everytime, i'd say it would be a pretty huge spew not to just shove every single flop after 3betting with such a medium/short stack.
Our percieved range really doesn't matter a lot, unless you play the same players a lot, or you are in a long slow blind structured tourney or MT SNG or SNG. Most of the time your up against relative unknowns, and your just making a play because he might seem reggish, you might have looked his stats up, he might be raising a lot etc etc.
You have a point with flop texture, but again, can we really 3bet/ check fold flops? i don't really think so. c-betting is really out of the question since we're so short.
Now if you have a smaller 3bet it makes it more interesting. But i'd say we really don't want to screw around too much, i'd much prefer 3betting to 9ish BB then jamming flops, should be a pretty profitable play as long as you've picked the right opponant.
Oh, and you pick up the pot preflop a heap of times too, don't forget.
Now in regards to what
hands, obviously things that are suited help, anything really that has a chance to pick up some kind of backdoor draw or whatever will help your
equity with an all in situation.